Andy;
While there are lots of happy SC owners, posts to this forum suggest that more owners have problems with balance on SC models than with other styles.
Posts to this forum also suggest that Balance K's, Rogues, Europas and Elans are the best balanced styles. I have an Essence which I love. It probably doesn't balance as well as a Rogue (I've never played a Rogue) because of the smaller light-weight body. However, because of its lighter weight, it is easily maneuvered while playing.
For stock packages, the best, most versatile electronics package is the Series II, which is also the most expensive, followed by the Series I. The Signature, Anniversary and Europa/Rogue packages would come next. Also in this group would be the non-stock but popular East Meets West package. The Spoiler, Essence, Persuader and Epic packages would then follow those.
So, no, the Essence is not the best balanced and its electronics are not the most versatile. But there are a lot of happy Essence owners, with and without the Q switch addition.