I used my current anti-blocking mechanisms and did the test:
Tor:
Freegate 7.05p:
(upload speed dubious? Though I know that the service compresses and encrypts GET requests...)
FreeU 1.4:
(Somebody told me that it uses PGP all the way, without AES. This is probably why it never gets blocked but goes pretty slow.)
UltraSurf 9.98:
BAD LUCK TODAY. Download test data corrupted at speedtest.net (u.surf has notoriously high 3% packet loss and therefore often fails)
DynaPass 3.2:
The communists got this one!
Conclusion? Freegate Rocks. Period. However, it probably uses a weak encryption scheme like DES, because every couple of weeks this version gets blocked and another rolls out. Pretty much of a fuss. Last month Freegate 6.98 was working like magic, and the version numbers go like 6.98 6.99 etc. Tor is the choice if you want open-source, and it works quite well for a system with a open specification (think about how bad Psiphon goes these days in China). FreeU gets bad ping and slow download, but 1.4's been around for quite a while and has never been blocked. Ultrasurf? Well, it has too much packet loss. Often, the GET request gets corrupted, and the webpage times out, and I need to refresh. All Youtube videos lose a packet in the middle, and the video stops streaming.