Hi, Looking to add one of these 'classics' to my mini collection of single stack 9mm. Can anyone give me the rundown on the HK P7 series of pistols or direct me to a definitive resource? Details such as.. General price I should expect to pay for one. Significant markings I should look for. Differences between the various models. Etc. I'm starting to do some legwork on finding and buying one but want to know what to look for and what a fair price is. I've seen prices from $750-$1000 depending on model, condition, finish, etc. It would be for all purpose use (CCW, home, car, range, etc). Not looking for a mint safe queen but also don't want a completely dogged out police trade in. TIA!