I was actually doing some setup testing on the weekend in prep for an upcoming gig. I don’t have much experience with high end gear but will comment on the stuff I know. I consider my rig to be on a budget but not too cheap.
On the powered speaker side.
I play solo as well as in a three piece band with both projects just getting off the ground. In preparation for some solo gigs first I picked up a B52 Matrix 1000 sub and two 8" satellite speakers very cheap locally second hand to do smaller gigs and am in the process of putting together a rig for louder gigs mainly with the band consisting of two Yamaha DBR12 powered speakers and a powered sub to go along with it.
The B52 rig sounds fantastic and can get quite loud. I did use it for a small private gig I did with the band but it was pushed to get the volume needed. Although it is only a small rig in total size the sub is quite heavy and big and difficult to get around if you need to go up any stairs etc. Overall though it sounds great with the beatbuddy especially the kick drum through the Sub.
I only have one Yamaha DBR12 at the moment with another on the way. Have been using it at band prac for vocals and my guitar. I had a play around with it on the weekend in solo show setup with Beatbuddy. It gets very loud and clear. Sounds great. On a small gig one of these would be plenty loud enough and two would be enough for anything you would be looking to do. The only reason I would pick the B52 to use over the Yamaha at a small gig is the Sub. The Yamaha sounds better and is so easy to carry and setup and still gets a good bass response out of it but I absolutey love having the Sub for use with the beatbuddy and electronic V drums which my drummer uses which is why I will be getting a bigger sub to go along with the DBR12’s.
Don’t let that put you off just using a powered speaker without a Sub though cause there is still plenty of low end. I just love the kick that a Sub provides. I think a 15" powered speaker is normally recommended if not going with a Sub.
On the mixer side I had previously used an old Peavey XR600c powered mixer and a cheap Behringer mixer but neither of them was anything to write home about in the sound quality department. I picked up a Digital Mixer in the Behringer XR12. All I can say is Wow. The sound quality and features in the mixer are incredible. To get the same features in an analogue set up would cost a bomb and require a rack full of gear. My advice is to download the X-air app on a tablet or phone and you can have a play around with the interface to test it out. The downside or upside depending on your point of view is the lack of physical controls as everything is controlled via a tablet, phone or computer. I find that with the mix set I rarely have to make may adjustments anyway during a set and it hasn’t been a problem.
Here is a promo clip I have using the B52 setup. The first half of the clip is with the XR12 and the last set of clips I am actually using my Roland street cube as a mixer.