Well the 05 angel is pretty cheap now and the timmy is probbly even cheaper like in the $200 range. I don't know how much the Shocker is worth but not a lot. But anyway you could look at the Quest, PM6, PM7, Fusion, Mini all around $400.
Well than the angel isn't a bad way to go if your looking used. The shocker is 2003-4 ish along with the timmy. New you'd be looking at the DP fusion, or possibly a cheap Invert Mini.