Well, they are fantastic deep core/narrow limbed, mild r/d longbows. Very silent, very smooth, forgiving etc. I would rate them in the mix for the top for that type of longbow, especially when you consider the value you get in the bow. I dont know of a "better" buy in this style of longbow considering the woods Elmer uses, finish etc....
The standard grip on the Dalton is a low wrist, kind of cross between dish and locator.
As far as bow performance and manners etc. they are most similar to a Toelke Super D from my experience... which are fantastic.
Comparing to a JD Berry, ive only shot 1 of those and it was real nice, very similar in performance to the Dalton, but the grip was alot different, had alot more of a true "locator".
On the Dwyer, ive only shot the Duantless which is not a good comparison.
Your best bet would be to shoot each and decide.