I've had a cheap ebay one for 3ish years. No complaints, it works as it should. I don't feel a need to spend any more. I've only used it 3 times but my mates sure love borrowing it.
There wasn't an adapter for 3b/2h/2L glowplugs but there was a longer one I cut down which works great. I think one of the injector adapters works for 3b ect but bugger pulling the injectors when you can just do glow plugs!