Thanks all. Great advice once again.
I guess I may keep the ZT 0550 given I already have it and do really like it and it will do everything the PM2 will do, just a bit beefier. I'm sure I will eventually get a PM2. Last week I was looking at the Benchmade 375 fixed Adamas. I assume the Mora, Esee brands etc... may be a little easier in the hand, from the looks of things. I still may just use my old Buckmaster 184 for the time being but will probably sell it for something lighter. It is a beast. So far, I really like the look of the ESEE 4 but it is expensive.
I really can't believe how good this forum is.