I would hazard a guess that over half of us that post regularly have the sub.
Up until now, I've liked it.
However, since I have about 90% of the figures that I want, I won't be getting it next year. Too much POP and NA in the offing!
If you see yourself wanting a majority of what has yet to be produced, I say buy it!
Otherwise, you could end up with figures that you don't want. And, if you've checked eBay, these things aren't as easy to get rid of as they were a couple of years back.