I would probably try and keep the T Quad in your case they generally get fairly decent mileage (if thats a concern of yours) compared to aftermarket performance carbs plus they usually do very well at full throttle opening and you don't have to mess with all the linkage, fuel line, and possibly adapters needed to change carbs. One area I had problems with on some of the T Quads is the the off idle throttle stumble which seems to be related to them being very lean and also some of the accelerator pumps you get in the carb kits are junk.

I tend to prefer the squarebore carbs over spreadbores for my type of spirited driving they tend to have better off idle throttle response depending on how well the carb is matched to the combo and they take less throttle movement to get a desired result when your doing anything other than going full throttle. Just my opinion.