Since you are already were looking at the HWs and Dianas, then don't bother with any of the less expensive brands. The important parts like triggers are already good on the German guns, the TX200 is good also and an investment at this level will ensure that most of the trials of shooting springers will go smoother with more satisfaction. If you don't need open sites then the HW97, TX200, HW98, Diana350 are good, if you want open sites then the HW80, HW77, Diana RWS48-52 are well regarded. If you want the most powerful and accurate then you need to go PCP without a doubt.