What's the best electronic chess game? I want your opinion!

What is your favorite electronic chess computer game? Tell me why you like it, what you don't like about it, etc. The reason I'd like to know is because I've written an article about electronic chess computers here...

https://hubpages.com/games-hobbies/Electronic-Chess-Computer

 ...and would like to have more peoples' opinion.  

Also, if you find something you think I should or change on the article, no matter what it is, I'd be pleased to know. 

My personal opinion? I own a manual installed Picochess on a raspberry pi. I know I could've bought a DGT Pi, but already had the raspberry pi, so it was cheaper for me to just by the DGT 3000 clock and make one myself.

The only thing I don't like about it is when waiting on the computer to make a move, I have to consistently keep glancing back at the clock's screen. The only other option is to wear earphones, which is what I usually do.

I love the tons of options, including the different chess engines, opening books, modes, time controls, etc. Also, the Rodent 3 chess engine has tons of different personalities, so it never will grow old!

So that's my personal take...

What's yours?