fasteners for building boxes

What kind of fasteners are people using to build MDF boxes?

I've always used drywall screws, but I recently upgraded to a full suite of pnuematic tools - including a brad nailer and a crown stapler.

I started a box tonight using 1" long 1/4" crown staples and they seem to be clamping fairly well (the material is 1/2" MDF). 

Do brad nails offer any advantage over crown staples or vice versa?

I use brads and wood glue. If the box is done properly and cuts are straight and clean, then the wood glue will seep into the MDF and shrink pulling the MDF panels together. I'll use screws once and a while, but I'm not TOO fond of them. If I use them, it's pre-drill, wood glue fill, then screws

As for using brads vs staples, I prefer brads for wood. They usually have more bite as far as I can tell and will hold the wood better.

I ended up going with staples for both boxes and they did OK.  My logic behind it is that the brads were textured to prevent backing out, but all the texturing was at the top of the brad - the textured part wouldn't have made it through the first sheet of MDF to grab the 2nd sheet.  So, I figured since the staples had two arms on them that they must hold better!  I also remember tearing a part an old MTX box many years ago and being surprised that they use staples to hold their boxes together.

So what exactly was I building?  Enclosures for my inwall speakers that flank my soon to be completed 120" hd widescreen theater! 

No, it pretty much looks exactly like it does in the pictures.  I've been very busy lately and haven't had much time to devote to it.

I'm doing the entire basement, so its about 1,000 sq. ft. of space - the theater room, a bed room (with egress window), a large storage/work room, a small work room and a full bathroom.

My next step is to build a custom inwall audio rack.  It's going to be MDF based with polished aluminum rails to hold glass shelves.  :)

My setup already has several major flaws, but for what it is for it will be great.