Robert - I used to have a Squier Telecaster Custom II w/ P-90's, and it really rocked. Although there were some QC issues with the guitar, once I had it set up properly, and put some decent tuning machines on it, it played pretty nice. Very similar to the Squier Standard Teles, only with a slightly fatter neck. The pick-ups were pretty good, too - Duncan-Designed models. I believe that guitar was $230 US, which is a pretty good deal. It has a cool 1970's retro look to it with the over-sized pickguard.
Hamer is another company that offers a pretty nice P-90 equipped guitar. Theirs is a double-cutaway body design, with a gold-top finish similar to a Les Paul. I've seen those around the $300 US range, and quality-wise, they're certainly a big step up from the Squier. I presently have a Hamer SATF double-cutaway, with a flame maple top. It's a solidly built guitar that sounds great, and plays wonderfully. The Hamer is sort of like a cross between a PRS (neck) and a Les Paul (body & sustain).
If you wanna' drop some ca$h on a really good one, G & L has a soap-bar type guitar too, which I think is in the $650 range. Quality through and through with G & L.
