RE: Is driving a slow rc car boring after driving a fast one?
It does depend...on where you drive it!
I drive many brushless offroad models. So a brushed rustler/slash/buggy isnt much fun where I drive my brushless stuff. But put them on a track and its a blast.
They seem just as fast as BL on a tight track...where a brushless wouldnt be much faster anyway. but in large open areas they seem too slow and thus boring.
So its all about WHERE you drive them.
And as mentioned before, you can go with rally or drift tires for a different feel altogether.