a good thing about reason is you don't have to have just drums. You can have many types of audio files large and small, making it awesome for funny voice samples and all that. Good to make use of the pitch and tone auxiliary knobs.
If you want better more powerful samples, then scroll through the Reason sound bank, i know there are some very good hits in there. you can also route each individual one to its own effects.
Maybe you could just ask someone directly for some samples?
Or, you could import a song into an audio program, cut out a tiny section, and use a bunch of those for you kits. Believe me it's how the pros do it.