I have a pair of twins that are restored and while their always neat to look at I have always liked the 541's and think their one of the nicest electrics out there. So much so that I just bought one and pick it up this week.
Twins aren't all that common either and usually go for around a grand because their two pumps conjoined, but are costlier to restore. I'd grab the Bennett and try and get dibs on the second to buy at a later date if it's that fairly priced.
Graeme (pronounced Gray-um)
Collecting Canadian Products such as Red Head Oil, Red Indian Oil, Buffalo (Prairie City) Oil.