Sweet game, there's a ton of features for those that look. Fast animations. Any background you could want. The ability to Not use metal is much appreciated. The customizable undo feature is awesome, and hints are nifty for those brain-dead moments. Haven't tried the networking feature yet.
A few of the simpler things are missing though. Window placement and background are not remembered between application quits. Even reloading a saved game does not return the window to where it had previously been moved, nor recall the previous background used. The window is not user-resizable either, and cards may appear too small to those using higher screen resolutions. There's no setting to enable cards to autoflip up from a stack after you've pulled the previous card off the top. I see a "Sounds" option in preferences, but it doesn't seem to do anything (unless that's only related to net play?).
It may not pack as much of a visual punch as some of the other recent solitaire decks out there (the card well contrast is a little sharp, and the card edges are hard), but it's laden with features.