There are many very good scope choices out there. For general purpose hunting at short to medium ranges, a 3-9 X 40 is quite satisfactory. Get the best quality glass you can afford. Reticle choices are personal and very dependent on shooting specifics (range, low light???, illuminated or not, etc). I would not worry about parallax correction until you get over 12 X at the top. Do you hunt in nasty weather? If so, consider a scope with some sort of lens coating like Bushnell Rainguard.