I got the big one with the hard case, and I've almost filled it up. Volume, FM-4, bassballs, q-tron, deep impact, three boss sized pedals, a vocal pedal, and a wireless pedal-sized receiver. I'm going to try and cram on my compressor and my talkbox too, and I hope they fit. So the big one is perfect for a pedal nut like me. It's built really well though, and the roadcase is pro quality.