Well the VFS 1 just got upgraded...
Here is the new one....
http://www.speedtechrc.com/store/ebp...il.asp?id=6309
The VFS1 is a great ESC but can be tricky to get setup, but once setup it is a super dialed ESC...
The GTX is a proven winner, the Sphere isn't one that I have seen too much of.
Hope that helps,
-Shookie <><