Their cameras are always garbage, but other than that I've been always buying them since the Nexus line went dead because they're always the best for the least amount of money.
If I'm expected to buy a new phone every two years my working thesis was that I'll pay very little for it. A lot of their phones are pretty decent for like $50-$150.
I'll admit I caved a bit and bought a Motorola razr last Christmas though. It's much more like the phones I usually don't buy: no headphone jack, no microsd slot, a bit expensive, etc... But I wanted a phone that would actually fit in my pants comfortably for once.