The LVM one is excellent, has enough guts to inflate a dinghy. Rather some others that are really only designed for airbeds. The only problem is that is does not have a cigar lighter plug, but jump lead connectors, I questioned the manufacture about this and they said that the current it draws is greater than most lighter sockets are wired for, some 20A from memory.
I bought mine from force four, but I am sure that you could find them elsewhere.
Sharky: was that the one you were think of ? Just seen your occupation should have chatted to you about a clutch form my 90 !