(Unless otherwise noted, I own all the boards I am discussing below.)
Chessup 2 will be a nice board when it comes out. It is still in the design/development phase. I have one on order. I also have the Chessup 1 and it is a good board, but still needs an extar piece to play online.
The Chessnut products are nice, solid pieces of kit. The Pro is a full-sized tournament board, the Air and Air+ (do not own the +) are library/study size. All three need a way to get online.
The EVO is a library study size with a built-in tablet that can do a lot. It is a bit large due to the
The Tabutronic (sp?) boards look to be very nice although i do not own any of them. They are on my bucket list though.
The DGT Pegasus and the Millenium e-One are acceptable, not the best. The Pegasus has larger peices, still not torunametn sized. I did play a game today with the e-One and the Chessconnect extension, it played well.
I would stay away from the SquareOff Pro. Some will say it is good, many others and I will disagree. It is a tournament sized set, but the implementation/integration of the app is not very good and to use all the features you have to pay a subscription, something they never mentioned when we originally bought the boards. In fact, they did not even start that until about a year after release (maybe a little later). So those of us that bought on day 1, well ...
If you have any specific questions about the boards I mentioned (of the ones I own), feel free to ask.
I've been exploring electronic chess boards and there are so many that, on first inspection, look so good. I'm leaning toward Chessup 2 although I think GoChess Lite Classic looks very nice also. The self moving version is temping as heck- I'm not there yet.
I'm a leisurely player that after a long absence, would like to devote more time to improving my game.
May I have opinions on the best board for one wanting to improve their play? So far Chessup 2 seems to be it.