Lee, that is far more complete then I had, still a little too general but a good link. Thanks
Lew, your comments are on the money from my limited experience, have had good luck with both air and vacuum but prefer air.
Use Onsrud cutters and they are quick to help but would like not to have to make a call every time. thanks
Deko, may have to wait but at least one is in my plans for sure.........saving up, already have $400 ...won't be long at all now.