I have the Ross Momentum 4, and it is seriously high quality. I bought it when Cabelas was blowing them out, so it is not the LT model. The LT is considerably lighter, but otherwise the same basic reel.
The weight doesn't bother me one bit. If a couple of extra ounces will blow your shoulder out of joint, something is horribly wrong with the picture other than the reel.
I have the Momentum paired up with my Sage Largemouth Bass rod. They form a great team, and I've had great success using them for bucket mouths and other species. The machining and quality of the Ross are impressive.
Since you mentioned Abel, I also have an Abel Super 8 that I have attached to a Z-Axis 8wt. rod. If money were no object, I would have a stable full of Abels. They are works of art, and the machining and precision of the reels is unsurpassed.
Reels can be compared to watches. The Timex will keep time just fine, but if you want something special, you buy a Rolex.
Abel is the Rolex of fly reels, and you won't be disappointed if you buy one.