I've had many Ta05s, Tb03s and ta06s and I really don't like the Ta06...it was never as free and I couldn't get the chassis as rigid as I like either...way too much twist. So that killed corner speed. I'd say the Tb03 is my choice from 25.5 -17.5. I run it in USGT and it's already .3 faster than my Ta06 and getting better every time out. I still really like the 05 too...kind of a toss up with the 05 and 03.. But I wouldn't take a 06 for free.