good stylus?

I am relatively new to photoshop and am using it for architectural illustrations. I am looking for a reasonably priced stylus that will help with brush and line effects. Any suggestions?

Stylus? Do you mean the pen thinghy? Usually those come with a graphic tablet - Wacom would be the one you want - they're the best.
An Intous2 - the larger version comes with all sorts of accessories... - here's a link - there's even larger versions...
This is the wacom airbrush
Also if you're rich you may want to check out Cintiq