I find the dynamics of venture-backed (vs. bootstrapped) companies to be telling. I mean, not everyone who runs a venture-backed company is shallow or trying to fool you, but there is definitely a much stronger emphasis on appearance, when you are using other people's money.

Personally, I would be fine working for a venture-backed startup (I mean, if I needed to work for other people, which is something I'll avoid if I can.) But when it comes to my own company, really unless my investor is someone I'd want as a partner without the money, I'd rather get a dayjob.