Both Solmar and NE are good boats. They each have advantages and disadvantages.
Solmar's cabins, even the "superior" ones are tiny, but it has a large dive deck and camera table and a wide open salon with lots of windows. The food was first rate, as were the guides. They will do things like drop you off in blue water for more of a chance to see pelagics. You have to put your gear on in the zodiac, so it's slow to get into the water, and they generally were harder to get back into. Free beers in the afternoon, wine with dinner and they didn't care if I brought my own bottle of rum on board.
NE has much larger and more comfortable cabins, good food with a smaller, more cut up salon/dining room. Food was good, but they keep it all kosher, so no pork products are served. It's a better boat in a seaway and while transfers off the stern are a little harder at times, they have a lot of experience with it. One of the skiffs is a large aluminum one with a good ladder as opposed to the zodiacs. Good guides and a safe program, although they will not do much in the way of blue water dives. Beer and all is sold and they don't much allow you to bring your own. What I didn't like was the very small dive deck, broken up with the ramp area for the skiff, and the camera table was also too small.
All in all, I'd probably go back on the Solmar.
Jack