We.already talked about my opinion on boxes, so the only point I want to make is that Snaponle l financing is way better of a deal then Cornwell. Cornwell is simply a credit card the way a lot of motorcycle dealers used to sell on a card, ask anybody how big a PITA it is to pay off. Snapon is much more like a car payment with a set number of weeks that you can negotiate.
I would just bite the bullet and go Snapon, the damn box will last forever, and if you'll always be working on something even if you get out of the trade you won't want to get rid of your tools so why not just have the box? This is why I just said fuck it a few years ago, found a decent deal and went with it, of course I really can't see myself doing anything else anytime soon.