If you have a shop that stocks ESP, just go play them as often as you can, and see how they feel. Or, buy a used one at a good price, and see how it goes. If you get one at a low enough price, you should be able to flip it at no or little loss if you don't like it. A lot of the mid-range LTD's give you a good indication of what to expect as well. They might not be quite as refined, but they at least give you a good idea at how they approach things like neck shapes, pickup spacing, body contours, etc.