Hey Richie,
Have been playing bass in a variety of situations and have found upright works best in an all acoustic,ie mics only situation. In a hybrid(mix of mics and piezos)a straight electric gives you a little more latitude in terms of amplification/eq/mix. The Guild B30E is a good, functional cross between the two as it's designed to be used either way and is much more portable than an upright, obviously. And it 'looks' cool! There will be other posters, I'm sure who will be able to give advice on equiptment, etc. My rig is a Peavey Basic 112(Solid State-50Watts), Boss Bass eq pedal and a '76 Gibson Grabber G3(cheaper than a Fender P-bass)and a Guild B30E. I use both basses with the same rig with no problems. You have to cut the highs alittle with the Guild, but that can be done with it's on-board eq. Eveything else I just leave the same. Hope this is helpful.