@Karlalphonso Welcome to the forums! I've carried my 25 daily since the review and am even more assured it was the right decision. I had to bring my laptop home over the weekend which was no problem with the extra space - something that would've resulted in a very tight squeeze in the 19.
Both the 19 and 25 have a pocket on the front of the main compartment, however on the 25 it's large enough for anything holding standard letter sized paper (e.g. a clipboard, probably a 1 - 1.5" notebook). I keep my 12" tablet inside a pretty thick padded case (it's shown in one of my pics) inside this pocket and it's perfect.
My plan is to use this as my sole companion on any 2-4 day trip. I don't have any TB packing cubes but I do have a plethora of Eagle Creek cubes. Along with everything but the laptop from my original post, I was able to fit:
- an Eagle Creek Full Cube (6 t shirts),
- Half Cube (6 pair boxers) - fits perfectly in the bottom pocket with enough room for a small stuff sack,
- Quarter Cube (6 pair socks),
- and a Medium Fold-It (4 shirts, 1 pair jeans, 1 jacket)
Granted this isn't a standard packing list, rather something to adequately fill the cubes. The backpack was stuffed to the gills but it fit and I didn't feel like the zippers were at risk of bursting.
Hope this helps!