We usually go with Beckhoff panel PCs these days. Super sturdy units and have really decent hardware specs for a reasonable price (not cheap, but reasonable). Still, most HMIs are generally capped at 1366x768 for widescreen ~15-19" unless you start paying more for 21" screens to get 1920. But then you need to have bigger panels as well to suit...
I would agree though that the AB PVP hardware is pretty good and reliable.