At the very start, I wanted Capiche to be essentially Wirecutter for SaaS. We ended up going in a different direction, but I'm super impressed with Satchel's execution here, and as someone who spends a crazy amount of time on this stuff, I learned a bunch of new things reading through the site today.
I really don't want to hijack @fission's launch discussion, but thought I'd just reply to your comment on the invite-only thing: our site will be wide open soon-ish. Just taking our time building a community around high quality discussion (most of which has little to do with comparisons/reviews), but eventually will open it all up. Think of it like Stack Overflow's private beta...just a step in the process.