Pretty much none of them. I'd say go new, get a guitar-amp combo for the same price most of these used ones are going for. Guitars aren't typically cared for like Porsches
Used are often in rough shape. A quick ebay search shows several brand new Fender Squires for sale for under $200.
I noticed you're near Seattle, so I did a quick google search and found this:
http://ssl3.adhost.com/americanmusic/merchant.cfm?step=4&pid=33042
$280 buys you a brand new Squire strat, 15 watt practice amp, tuner, strap, cables, picks, extra strings and an instruction book. Can't beat that!