When you use one of those, you will find that your hand holding the head is going to be moving all over it. Take a look and see if anything is going to be chewing your little finger up if you get it around the spindal, and you will. I've see some that had crap for the freewheeling latch on the pad.
I have a Ingersoll-Rand that I've used for years. It's like a Cadillac of DAs, but I don't think they make this one anymore.
Don't think you will never use it again after you finish your truck. I have used mine for a lot of things including my dining room table.
When you use a DA, always keep it moving and let the sandpaper do the work. If you fail to do either of those things you will end up with a wavy panel. If you use the paper after it is worn out, you will be pushing against the panel and you won't like the results.
A tip. If the paper loads up but is still cutting good, slap it with a length of heater hose and the build-up will pop off. This works once or twice, then get another piece.
