Hey Jack, welcome to the Village! I don’t have either saw but have followed comments about both saws on this forum and others. The Delta is basically a clone of the DeWALT of which I own. It uses unsealed bearings which tend to wear out prematurely. It does have a nice sized cast iron table that helps absorb vibration. I’ve owned DeWALT saws for over twenty years and enjoy using them, unfortunately, I’m currently on my third saw, and it’s starting to act up. So, that is what to expect with the Delta.
The Pegas saw is an upgraded version of the Excalibur EX 21. The bearings have been upgraded as well as the blade clamps. The advantage of these type of saws is the tilting head. The table stays stationary while the machine tilts when bevel cutting. Both saws have a lifting upper arm to facilitate top feeding of the blade. The only down side of the EX type saw is they have smaller tables, especially in front of the blade. Most folks using these saws don’t mind the smaller table. There is a larger table available.
Knowing what I know, I would definitely recommend the Pegas.