I'd usually make it 70-80 pre in this spot. We're not raising to win the 50 chips or whatever trivial amount is sitting in the middle preflop, so we shouldn't raise huge and just make everyone fold. I also don't think you're betting for "thin value", as you say, on the end with top 2 - that's not thin at all. I'd start to get concerned if I got raised after betting the river, but I'd still be calling readless - the hands that beat us aren't really that likely. I'm guessing you were beat or you wouldn't have started the thread, but I think you played it fine.