I like the Weston Masters, I have a pair of Master IIIs, one I use, with an Invercone set, and one NIB as a backup. I use the Master pretty much all the time, unless I need low light metering - then I use an old Lunasix. I still have the 650, the cell is active, but no longer accurate. I think I'll send it to someone and see if it can be brought back to life.