Hi crazyhorse,
Trust me im no expert on this

but from what I gather, if the 1000 bl came from mostly different IP's, then it could be better than the 200 high pr back links..
There's obviously the chance that the low pr links could some day achieve higher pr.. then it would almost certainly become more beneficial to have the more links.
Why not just try for a 1000 high pr backlinks?
Anyhow, this my first attempt to answer a question on anything to do with seo, so you have my full permission to laugh
MaK