Hitmontop is a lot better than hitmonchan. The elemental punches are useless on hitmonchan, it learns mach punch which is its only naturally learned move that people use. Hitmontop is a lot better in GBA, and has its own promo card. It looks like a lot more fun, with the whirling and such. Also, hitmontop isnt known for being a cheap nuisance:
Enemy Hitmonchan goes first.
You have Electabuzz active.
"I use Bill, Bill, Bill, attach two pluspower, oak, oak, cpu search, one more pluspower, ko." ggnore
^^^ this is what happens when you like hitmonchan. he (it is a crossdresser) is a traitor and a backstabber.