Please take note that the person to whom you replied to clearly put the acronym "imo" in the highlighted sentence. IMO, or In My Opinion is a clear statement that this is indeed the posters Opinion. This has been drawn from his experience....just like you're loving your SX has been drawn from your experience.

Seriously though....I have an American Fender Precision Deluxe that IMO is the best bass in the world. I absolutely love it. Doesn't mean that everyone else is going to hold to the same opinion. It would be a boring world if they did. (End Rant)
On the note of the SX/Essex basses....I haven't played all of them obviously, but I have played a couple.
IMO, the ones I've played were not all that great. One had bad fretwork and the other....well, it's not worth mentioning. It had been treated so badly by a former owner that it was hard to tell if it had been a good instrument in that past or not. Poor thing.
Anyway, to the OP....like any bass, you will want to try out as many as possible and buy the one that works for you. You might be like me and not find an SX that is right for you....or you might fall in love with the first one you pick up. Try em. At the very least you'll have fun looking.