I guess issue one is cost. How much do you want to spend? If money were no object and I needed a small gig kit it would probably be a used Sonor Prolite. Should cost about 1500 pounds.. . . . Anyone got any recommendations?
They're durable, lightweight (as the name implies) and they can played with great effect either subtly or powerfully as your needs dictate IMHO.
On the other hand, if you just want something that's reasonably priced, sounds decent and is easy to move around I'd just get a good used Pearl (Oops) kit for 300 or so pounds sterling.