Yes the .25 6 port race is awesome too kinda the best of both worlds. it gets awesome runtime almost as much as the .21's but way more torque. A friend of mine has 1 and ran it last year in the Hyper st also his was modded though and was just sick. The Hyper isnt the lightest trug either. The .28 I wouldnt even know what to do with, the .25 modded I have seen and I drove it a few times too is more powerful than any .28 i have ever seen. I used to run MT class too back in the day with my super tricked out AE MGT, if I still ran that I would have the .25 on there and have the runtime on my side. I think a modded 5 port .21 or stock even would work too.