tbh I sort of agree - but I think a mantis is still small enough - I was constrained to a mantis for a couple of months earlier in the year - & it was interesting - but I kept reaching for things that weren't there - I appreciate the smaller case (mantis) as a focused environment - I had a deckard's voice and a magneto in there so not that many modules! - but any smaller and I think you miss out so much on the utilities that make the bigger modules shine and of course the ergonomics - I was really glad when I got the rest back though - about 1400 extra hp for me including video, in my case(s)
as for filling the case fast - that's down to you...
I'd say get the 'slightly' bigger case but go slowly... set a budget of 100/month or something... and don't buy a new module until you are thoroughly conversant with the modules you have and how they interact
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities