Just about 8 months here. I'm still reviewing RTK, but not doing it every day, because I'm too busy. (But I mostly keep up with it. I don't get too far behind.)
My approach is a bit different because I already had 6 semesters of Japanese at university a while back, then forgot a lot of it. But when I learned Japanese the first time, I used Genki I and II, so I used those for review. (I bought the answer key for mining sentences-- very useful.)
I've been doing the Kanji Odyssey stuff, but I've been a bit stuck with those, as my Anki deck has ballooned to about 5500 cards, with about 175 due a day. All that time spent reviewing hasn't really left me enough time to add new cards, so I'm not as far ahead as I'd like to be. I agree with Khatz about short sentences. Long sentences suck. They slow down Anki reviews. Writing out sentences is good to do in short spurts, but I don't do that anymore, either. I either draw them in the air with my finger or visualize the kanji in my head to save time.
I like Kanji Odyssey for the most part, even if the sentences are a bit long, the vocab is great, and it really is in a solid order of usefulness for grownups. But you need a certain amount of grammar background before you can make use of it.
I've also been adding other stuff to my Anki deck as well, so that's been bloating it up a lot, too. Lots of stuff from Yahoo and Kenkyusha online dictionaries.
RTK has made it a LOT easier to plow through vocab. Before I did RTK, I just saw kanji as random squiggles. Now they make sense to me, and even if I don't know what they mean, I'm familiar enough with them to know how to look them up properly. (That is, I can draw them on my electronic dictionary's kanji input pad without having to look back at the character I'm looking up.)
There's a lot of stuff I've been wanting to do, but I just haven't had time to do because of real world obligations. I've been wanting to replace my RTK deck with a RTK deck using Japanese (sort of a modified RTK2 deck) to kill two birds with one stone. I've also been wanting to finish Kanji Odyssey, and finish reviewing Genki II. (Just haven't had time for that. I've had a busy Fall.)
Most importantly, once I finish going over Genki II again and feel a bit more comfortable with my grammar, I think it'll be time to go full J->J. I've avoided it for now because I don't have time to figure out how to set it up, and it's just faster for me to go J->E for now. (Minimal E these days.)
I post a lot less on the forums now. Now that I know what I need to do, and what works for me, I spend a lot less time talking about studying, and more time actually doing it when I can. The iPhone is somewhat handy for that. I use Anki and the basic web interface on the iPhone for now.
So yes, RTK is worth it. Finish it off already.

There's a lot of stuff out there to try. Try stuff, see what you like. If you don't like something, there's always eBay to get rid of it.