I have a 24" I can ride all three. I used to ride a mod, but I got to a stage where it felt I couldn't progress - it didn't make sense on a mod. Anyway, I bought a 24". I like stocks, they feel bigger and more rolly. I can still do a bit of spinny stuff on one, but I prefer the 24" for that. Maybe a stock is easier for pedalling up objects, but still, I like my 24" too much just to swap.