This is the blaster we currently run, Its mostly for small parts but it really makes life so much easier, parts are CLEAN in minutes.
http://www.harborfreight.com/40-lb-capacity-floor-blast-cabinet-93608.html
We also have this that I might use on some bigger stuff
http://www.harborfreight.com/110-lb-pressurized-abrasive-blaster-95014.html