the more recent egos have been actually lighter than the dm's from the same year.
Egos are more efficient.
However I love matrixes.
With the DM for that tiny extra weight you're getting a much smoother shot. Self cleaning eyes.
And most importantly IMO a much more ergonomic gun. (no external lpr, UL frame)
Maintence is breeze on a DM, granted it has to be done more often but it is no harder than that on an ego.
As with alot of things in paintball it comes down to two things.
Personal preference and your own personal priorities but for me it's DM all the way.
...but i do want to spend some time with a geo