Floor Standing Mortiser

You might consider something like the Powermatic 720HD,
because it can (I think) do end mortising for loose tenons.

I have a Powermatic 719 and it's pretty solid. It doesn't tilt
though the head does travel quite a ways and modest angled
mortises can be accomplished using a fixture.

For quick frame mortises a slot mortiser is easier to set
up, and can cut angled and end mortises. They can
take 4" long bird's mouth bits for angled and deep
mortises, but I wouldn't do that personally with one that
uses a router as the engine.

One of the biggest advantages I'm looking for is the sliding table while keeping my work piece tightly clamped in position. I typically like to keep my power tools of the same brand, and I recently purchased a Baileigh cabinet saw. The Baileigh mortiser looks to be pretty sweet with a sliding dovetail table, and there's only a modest price different in their vertical vs. tilting mortisers. What other key features in your opinion or important to keep in mind as I shop for one? Thanks for your input.

I have the Delta benchtop model as well. I can see why you want to upgrade. Any of the floor standing mortisers offer better stock hold down than a benchtop mortiser. I have been impressed by the features of the Powermatic, Jet, and General international. In fact General international has one model that is technically a bench top unit, but with better hold downs and increased capacity.

Fine Woodworking magazine ran a comparison test…
http://www.finewoodworking.com/membership/fwnpdf/011159084.pdf