AER Compact 60
I'm a big fan of this amp, and turning up to a gig it's often like an owner's convention, because everyone else is using them too! The 2 channels are handy, as you can put a mic through one and your guitar through the other, with digital reverb. The FX are basic but clean, several reverbs and a chorus setting.I use either an acoustic or an archtop. Although the sound is a little harsh and digital it always projects very well, and is easily loud enough for restaurant gigs, most weddings.The XLR out is great for hooking up to a PA.
The portability is the key thing. You can move all your gear in one trip, or on the Tube, without any hassle.The AER is built like a tank and will never let you down - it's basically a miniature PA.