I'd look for a used S2. They're probably a bit out of your listed budget. I'm biased towards the S2 line because out of all my PRS, I think my Vela may play the best and it only cost 25% of what I spent on the other two. In your price range, the world is full of used SE models. There's no reason you can't find a used SE to meet your needs. If the Strat felt cheap another option is to look for a used Tele. You should be able to find a good MIM Telecaster in that price range, and the Tele will have a more substantial feel than the Strat.