At some point I think I'm going to get the new PN and hose for my Gold 2 speed.
As far as I know, it's basically the same machine (except for the LED lit basin)and design change.
I've always thought my Rainbow had good suction. I mean, if I'm using my 14 foot non electric hose and I'm vacuuming a cat blanket or something, it tries to inhale it. It may to have water lift in the 140's, but it still has really good suction IMO. With a proper PN, great cleaning : D
I mean the current PN I have is OK, it still picks up dirt/sand/cat hair so it's doing something.