Looking to buy a 22 pistol. I don't really want a mkiii or buckmark type pistol. I've narrowed down to either an SR22 or a thunder 22. I like the grip on the sr22 and I like the grip on a ppks but have never held a bersa. What do you think I should buy? Also, a dealer will give me an even trade on a new bersa 22 for my likenew kahr cm9. Fair trade?