I've been with BlueVM for about almost a year now. I got the Blue 1 (OpenVZ) for 1$/month (paid quarterly) around August last year.
Performance and Support: The server was more than good, it was very fast & stable (unfortunately I don't have a benchmark or proof of that) but at some point the network got extremely slow, it went from pulling a solid 30-50MB/s to a max of 2MB/s (proof below).
Just so you know, I've ran the benchmark multilple times, in different days, and the performance just got worse by the day. When I finally decided to open a ticket, not to whine about it (it was still good for my needs at that time) but to let them know about the issue.
Download speed from CacheFly: 1.97MB/s
Download speed from Coloat, Atlanta GA: 1008KB/s
Download speed from Softlayer, Dallas, TX: 798KB/s
Download speed from Linode, Tokyo, JP: 427KB/s
Download speed from i3d.net, NL: 449KB/s
Download speed from Leaseweb, Haarlem, NL: 541KB/s
That was my first ticket with them, and it was answered after 8 minutes. I didn't even noticed it till the next day, I thought they will respond in atleast 6 hours.
But the "issue" was not solved, the speed got even worse than that: (I was offered a transfer to another node/location in case "the issue doesn't resolve by itself"-actual quote from support ticket),
Download speed from CacheFly: 556KB/s
Download speed from Coloat, Atlanta GA: 680KB/s
While I was waiting for a response for why the network was so bad, I started playing around with some java stuff, and got a little stuck.
I replied in the same ticket (thinking there might be a problem with my server and/or the resources) letting them know about my problem, and they helped me with it ! Even though the server was unmanaged, these guys helped me ! I can't say how much I appreciate that guys ! Thanks again !
After 3 days from my initial ticket and a response that "the issue will be fixed in a couple of hours" the speed got even SLOWER:
Download speed from CacheFly: 189KB/s
The problem was solved in the end. But it took them around 4 days from my initial ticket to solve it :)
The same issue occured yet again 3 months later, but this time I accepted the node/location transfer.
Besides these two tickets related to performance issues, I've opened a couple more, two of them being because I accidentally paid the invoice twice...twice, and they gladly offered me a paypal refund or credit in my account, choosed paypal refund the first time it happened, and credit the second time as I had no intention of cancelling my server with them :).
I have used to box purely for playing with different stuff and learning purposes, nothing for production or critical stuff.So basicly, the vps was sitting idle 98% of the time.
Benchmark: Here's a benchmark of the server took just a couple of minutes ago: (ran the bench 5 times, below are the average results)
CPU model : Intel(R) Xeon(R) CPU E3-1240 V2 @ 3.40GHz
Number of cores : 1
CPU frequency : 3400.100 MHz
Total amount of ram : 256 MB
Total amount of swap : 256 MB
System uptime : 24 days, 1:40,
Download speed from CacheFly: 4.91MB/s
Download speed from Coloat, Atlanta GA: 1.86MB/s
Download speed from Softlayer, Dallas, TX: 2.35MB/s
Download speed from Linode, Tokyo, JP: 1.08MB/s
Download speed from i3d.net, Rotterdam, NL: 1.82MB/s
Download speed from Leaseweb, Haarlem, NL: 8.54MB/s
Download speed from Softlayer, Singapore: 516KB/s
Download speed from Softlayer, Seattle, WA: 967KB/s
Download speed from Softlayer, San Jose, CA: 1.05MB/s
Download speed from Softlayer, Washington, DC: 13.3MB/s
I/O speed : 119 MB/s
The speeds are kinda low, for a gbit conection.
Uptime: This is a category where BlueVM needs to work on IMHO, they had the worst uptime of all of my boxes. Since I added this box to my uptimerobot (back in May this year) they had 14 outages , lasting from 3 minutes to 12 hours, having a total of 32 hours of downtime in roughly 2 months.
For the past 30 days, the box had an uptime of 99.65%. (For comparison, I also have a KS-1, and Host1Free box that have a 100% uptime since I got them last year)
Overall: For learning purposes, maybe backup, and nothing critical, I recommend these guys ! For production stuff, not so much.
I still have the server with these guys, and intend to keep it that way, the support is one of the best I had so far ! They might be a little slow at solving issues, but they (unlike other hosts) atleast communicate with you during it, letting you know of the progress that has been made. Also they helped me when they weren't paid or obliged to, and for that, they won me for a long time to come.
Please keep in mind, this is just my experience with them, and my opinion about them.
Sorry if I have typos or grammar mistakes, English is not my native language.