Hi Guys, will try and answer all your questions in one post.

XXX8ight - Yep, the GXII-5RHO is the latest Gen 6 motor and is the one to go for. The GX Series still provide great performance, but the GXII has more refinements and is 34grams lighter than the GX, plus it's smooth power is very drivable.

fhm555 - Not sure on parts availability in your neck of the woods.
If you can't find what your looking for PM me. We carry pretty much everything.

nitroexpress - As far as I am aware, A-Main bought up all of GO USA's old stock of 2 needle carbs, which is why they are are on super special. My guess is you won't see any 3 needle versions until all the 2 needles are gone.
The two needle performs very well, but the 3 needle carb does add a further dimension to the motor, and the performance difference is noticable.
By up a couple of those motors real cheap and hang onto them until the new carbs become available over your way.

HAHA - looks like Flanno and me where both online early this morning and hit the submit button at the same time