I'd go dry cut. Quicker, better cuts, less clean up time, more accurate, the blade doesn't shrink...
The initial investment into a Dry Cut is higher, but the cost to run is about the same. The one dry cut blade will last for many abrasive blades, especially for larger material (as the abrasive blade shrinks, it will not be able to cut at or close to it's max capacity anymore, so you will have to swap out the blade more often to keep cutting a 4x4 tube or larger angle iron- not sure how much of a concern that is to you). Dry cut blades can also be resharpened instead of buying a new one. Costs $25-$40 depending on size, number of teeth, and hopefully that you didn't chip off the carbide teeth. That makes long term operation of the Dry cut cheaper, and you not only save time on cutting and not having to clean up that cut, but also save time not having to change blades out frequently.
As far as which dry cut saw, evolution has three lines of saws. The homeowner or Fury range is pointless for cutting metal. Not that great of stuff. Then there is the all in one pro range, which is okay, but again, isn't meant for people who are constantly cutting metal. Then they have their top line up of the Evo380 and the two handheld circular saws. These are the best ones they offer. The Evo380 is what you are looking for. It's about the same price as an MK Morse and has pretty much the same features. The vise is upgraded above their others and it has a cast base, not stamped steel. It is every bit as good as the MK Morse I'd say. Don't buy a used one unless you know that it is the 2013 Revision of the Evo380 (they upgraded a TON of stuff on it to make it competitive with other dry cut saws in the $400 price range).