That Gedore box looks quite nice, I like the push down handles VS the two independent handles. I'm a big fan of the Cantilever box. I currently have the larger Facom and a USAG. The USAG doesn't have quite the same quality feel as the Facom. It's amazing how much stuff you can fit in these...
I'll Throw in another recommendation for the Husky. It's relatively cheap, but has held up well for me and it always gets the job done. I use mine for mostly Ag/sprinkler pipe.
If your mostly cutting PEX, I would also reccomend this Uponor tool. It gives a bit cleaner cut. It also works...
I used to do quite a bit of decking work on boats. Robertson drive screws were great on teak decks where you needed to countersink and cover them with a bung. Usually you want to bed the screw in with a little bit of varnish before putting the bung in. If you needed to remove the screw...
There's a number of differing opinions on this. Personally I don't like to use thin-set or sub-floor adhesive under backer board unless there is an issue with sub-floor stability (IE going over shiplap). Bonding backer board to the subfloor pretty much means that you have to cut the floor out...