Please give me some advice on a 629. I've been wanting one for a while and have been searching around. I found a 629-1 in excellent condition, orginal grips for $700. There are a few used 629-6 on Gunbroker from $600-$700 used. I would prefer an older model, but is 629-6 for a $100 less a better deal? Is $700 a fair price for a excellent 629-1? Thank!!