Driveability is excellent. Throttle response is good, and the bike still gets about 30 mpg when ridden moderately. 35mm carbs have 1.56x the area of 28mm carbs, so this is a huge increase in inlet area. TMX carbs have a very thin slide and generate a strong signal at the venturi, so the have excellent throttle response, even when using a large carb on a small motor. Early TMXs like mine do not have removeable needle jets, allowing you to only change the needle to tune.
Later models are fully tuneable.
35TMXs are physically large. The stock carbs have area of 6.15 cm2. The stock port size at the inner disc cover is about 8.2 cm2. The port has a max width of about 24.3mm and max height of about 38.4mm. The stock port is 52 degrees wide.