On US servers, 4Mbps? I doubt it. I mean, not with Streamyx from my place. Using BolehVPN's US servers, it never reach 4Mbps. Only with their HK server. Despite the line being suckish, without a VPN I can reach about 552KBps (notice the KB, KiloByte not Bits) which is around 4.3125Mbps yes? If only I can find a VPN that offers the same speed like I can on a normal download, I'll stick with that VPN provider forever. Anyway, the speed difference are not huge, and you guys have servers options which are not offered by BolehVPN like SG server which I would love to have. Good work, good price. Just please work on the speed or something.
I am using Mac OS 10.8.4 on a wireless connection with the Streamyx 4Mbps package. Using Tunnelblick as the client for the VPN. Servers I use are as described above/before post. Protocols? Port UDP 53.
Thanks.
Edit:
One more thing, I'll try you guys' nearest server which is SG, correct? And give review later. I think it's unfair since I have used all BolehVPN's servers and included their fastest server in the thread. BRB.
Edit II:
WOW, holy shit man. I HAVE TO TAKE BACK WHAT I POSTED EARLIER. God damn I got the best speed I ever got so far with a VPN. VERY GOOD JOB with the SG server. Please improve the US server and you can have my loyalty as a customer!
I now vouch for this VPN than BolehVPN.
Using 4Mbps Streamyx, I got 6.25Mbps!
Screenshot:

SG server is when over VPN because the distance from you to the server is short. Same goes to US servers, there are futher hence speed will reduced but we could achieve 0.9mbps tested on Streamyx 1mbps.
Please do note that certain servers are actually quota limited, you can check this link to make sure which one are
I hope that you understand the reason of why so because some region are providing bandwidth on an expensive ratio compared to bandwidth from US. Usually are a couple times more expensive from US bandwidth.