I played about 20 games on mine today actually and enjoyed it more than Stargate  
It's all in the subtleties of the design - that small gap between the spinner post and the pop to bring it up to the top rollovers when on the right flipper - the vari targets are designed just too far to the left and right to get easy full shots onto and in saying that, good for strategy when you need to bring down the bonus back one or two to relight the extra ball & or special.

Looks straightforward but it's all in the detail of the placement of targets and posts.