buy a cab or build one?

I'm in need of a 2x12 cabinet. It must be able to handle a good bit of power. I'm wanting a Mesa Boggie 2x12 Rectifier cab, but I'm also thinking about building a cab with 2 peavey black widdow's. Does anybody know how much the Mesa cab cost? What would be the best material to build a cab out of? Would a closed back, open back, or 3/4 open back be better? I'm using a POD pro through a Mackie M-800 power amp, so whitchever rout would be best it must be able to handle the power. I really need some advise, so if anybody can help me out, I would really appreciate it.

Read these old threads for materials and tuning tricks.

If you still have questions, post again.

Good luck,
L.

Thanks for the help. I've decided to build a box myself. I already have it designed out on CAD and everything. I'm going to use 2x12" Peavey Black Widow's since they can handle the extra power I have. I can send you a picture of the plans to see what you think if you want. Again thanks for the help.