I go to Reverb first to see if there might be a reasonable deal on a used module, but do the math - the asking price can sometimes be close enough to retail that when adding tax and shipping (sometimes outrageous shipping), it is just as much if not more than retail from say Patchwerks, which includes free shipping and zero sales tax. I wish I could buy more from Midwest Modular, but since they’re local (Minnesota) they have to charge me sales tax. Patchwerks is great. Perfect Circuit is great. Detroit Modular is my favorite because they have a loyalty points system, and that is totally great. Mostly, I tend to surf them all to see 1) who has it and 2) is there a lower price between them. If the price is the same everywhere, I’ll buy from Detroit Modular to rack up a few more points. Ah, consumerism.