I bought an Etek 3lt off this forum two weeks ago and although I'm a newbie and I've not used it much, I think it'll work out fine for me. Ideally if I'd had the money I'd have got a geo 2.1 (nice smooth spool valve, quieter, slightly better accuracy, nicer appearance imo, - but nearly £1000!) but since getting the Etek, someone pointed out that eteks and egos are far easier to field strip and clean - geos and ethas having spool valves and a straight single tube, you can't so easily clean them through. I hadn't thought of that before, but I guess that is a good reason for buying an Etek over an etha.
However, like I said I'm a FNG so Ive got a lot to learn!