I always ask myself the same question when buying any gun....
If I had no other guns to use and was looking for a gun to reliably get me through a few years then would I buy it over any of its competitors at the same price.
This question takes into account such things as a guns reliability, ease of spares, knowledge of techs in the UK, how the gun compares in shot quality and efficiency against it peers, and if the gun will retain some good resale value in at least two years time If the answer is yes to this then I buy it if not move on.