I've worked my way up through the Epson flatbeds, and now have a V850 with the fluid mount adapter - although I haven't done any scanning since getting the adapter. The vast majority of my scans are from the Epson 3200 (I think) and V700 scanners. I also have a Plustek 120 film scanner which makes a better job of 120 film than the Epsons. Even so, one of the earliest Epson scanners gave me a scan from a 6x7 negative that prints well at A3 and reveals extra detail under a lens on the print, which is good enough for me.
Tucked away is a Nikon Coolscan scanner, a very early SCSI model which didn't give very good results in my hands at least with 35mm Kodachrome.
I tried the EpsonScan and Silverfast software that came with my earlier scanners, but switched to VueScan as both easier to use and allowing me to save the raw film from the scanner, which is a great time saver if I want to try different scan settings without having to rescan. At the time I made the switch, my 512 mb RAM Windows 2000 computer took 4 hours to scan a 5x4 negative; and if after 4 hours I found that the settings gave an abysmal scan... Well, I wasn't happy. VueScan cut the four hours retry to more like 10 seconds.