You didn't specify your budget so I'll deal with the around £150 market with which I have most experience.

Best value is a Simmon Whitetail Classic, either 3-10X50 or 3-10X40. Very cheap new and a massive bargain second hand but they only come with a duplex ret. The optics are brilliant.

Best all rounder is the MTC Viper 3-12X44, great optics, locking turrets, superb hunting and HFT ret, flip up and mounts included in the price. Has to be on the shortlist but bear in mind it is a big scope and quite heavy.

Best fixed focus is Bushnell 10X40 Elite 3200 - very small, neat and light. Target turrets and very bright optics.

I haven't got into the scopes above this yet, hopefully someone else will outline the more expensive options