To be honest, i think it comes down to personal choice with these 2 boards. Me and my best friend used to own the Arachnid 750. That was their top of the line board years ago. The face of it is identical to the ones you might see in pubs. It also has all the most popular games. Count up, Bermuda triangle, cricket, 01's and a bunch of variations.
The Dartslive board is great and the reviews have been good. So really it comes down to what board you would rather stare at. They both have very different faces although the segment size is the same.
Price might be a factor. I've seen the Arachnid 800 sell for as low as $249 with free shipping.
[You must be registered and logged in to see this link.]The Dartlive board is around $200.
Let us know what you decide.