What's the best skimmer i can get for $200-400?

[spencerC]

What about this one?

"Rated up to 500 gal. I thought i would have 120 Gal tank but got only 60 Gal aprowed by my wife and my tank has no sump, so i have no use for it right now.

Tunze 240/3 protein skimmer (for $249- used)

Comes with $40 sump stand and extra collection cup and new super Hydrofoamer nozzle that is being used in new line of Tunze Master DOC skimmers but fits in this one. For more finer bubbles (I believe the part number is Tunze 3130.16) With Ozone connection nipple
Very low power consumption only 15-44Watt
Mixes a lot of air 264 Gal/h = more then 900 litres/hr"

http://www.reefculture.com.au/catalo...roducts_id=161

Buying used is a little iffy though i guess... it's $700 less than new which is too good of a deal and worrys me.
It would be SO easy to pick up though, it's very close to me.
Opinions?