TBS looks nice - I like the design of the gimbal / anti vibration mount.
Gimbals - who knows on price - look at the Naza - the 'lite' version is around half the price the original Naza + Gps was a few weeks ago.
There seems to be some real momentum to the whole ariel filming lark - so I for one am sticking with my SSG (about £20 all in) and waiting until it all settles down. At that point i'll probably buy the TBS kit with the gimbal is it's proven to be a real winner