I personally wore Rawlings gear. Mask, chest protector, shin guards all Rawlings. I've had probably 3 or 4 catchers mitts and I think the last two have both been Mizuno. Both of them were pretty nice mitts. One of them I got real cheap so that's why I bought it because I really didn't need a new one..
I wore the basic shin guards and pretty basic goalie-style mask that Rawlings has. The chest protector was a little nicer, but I really couldn't tell you prices on any of that stuff. The mask took a beating... it got retired when I hung up the cleats. No passing it down or anything of that nature.
I have not worn this mask and it is likely more than you want to spend, but I have heard good things about this particular mask:
http://www.baseballexp.com/Cat...Y_SEQ_83|0/index.proI have a feeling you are going to have a hard time buying a solid set of equipment in your budget. Especially if you have to buy a mask AND a mitt. Those items are both pretty expensive.