I have an old set of Proto metric combination wrenches, a newer set of Proto Anti-Slip Design (ASD) metric combination wrenches, and also a new set of Wright metric combination wrenches. The old Protos are the shortest, the Wrights are a little longer than those, and then the newest Proto ASD wrenches are substantially longer than the Wrights. The Proto ASDs are by far the longest wrenches I've come across, including S-K, K-D, and Williams Supercombos. So Proto's standard combination wrench is what I would call "long-pattern," although I'm sure there are other brands (Snap-On, Matco, etc.) that are longer.
As far as Proto vs. Wright, I think both are good choices. Most Proto tools are made in Dallas, TX, and most Wright tools are made in Barberton, OH. Yes, Proto is owned by Stanley, but Stanley is an American corporation and Protos are indeed made in an American factory by American workers. Why not support the part of Stanley that is still doing something the way they have for so long? Both are marketed towards industrial users including manufacturing, mining, oil production and refining, government contracts, commercial aviation, railroads, etc. They are unquestionably heavy-duty tools. I also can say that I haven't had any quality control or durability issues with either brand. All the Proto and Wright sockets, drive tools, wrenches, etc. that I've owned have been formed perfectly, fit fasteners well, are uniformly produced, and have flawless chrome.
The finish is as good as S-K or Snap-On, and the only difference between those tools and Proto and Wright seems to be the heft of the tools - the industrial tools have slightly thicker socket walls and wrench beams, whereas the automotive tools are thinner and lighter, clearly designed to facilitate access in cramped automotive quarters.
You will not be disappointed with either - I'd go with whichever you can get the best deal on and have easy access to.
FWIW, I have a lot of newer "Blackhawk by Proto" tools, and while they are not the same tools as Proto (the tools are entirely different patterns from Proto), they are still made in the USA and are excellent. Blackhawk is less expensive, and I think the price difference is mostly a result of marketing differences and a much smaller range of tools, but I think the quality and durability is just the same. If country of origin is important to you, I recommend buying Blackhawk from a brick and mortar store, or at least confirming the country of origin over the phone if you're mail-ordering, because reportedly much of the Blackhawk line is produced offshore now. If that is indeed the case, there is still a lot of NOS USA-produced Blackhawk out there.