general purpose compressor or airbrush specific?

[liquid ideas]

Hi

I've just bought a premiair g35 airbrush and want to get a suitable compressor. I've read on some RC site that your probably better off getting a more powerful 1hp+ general purpose compressor rather than the lesser powered airbrush ones. I can get a Rockworth 6lt, 1.5 hp one for £50 brand new ( http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWAX:IT) or for similar money the AS18 mini piston one which a few places sell including everything airbrush. If i want one with a tank it'll be around £70 - 80.

So which one would be the one to go for? It wont be used every day as im just starting out.

Also anybody used CO2 cylinders instead of a compressor?