This is a highly opinionated topic, and if youve read any of my postings you can probably guess where I stand. I havnt ridden my pogos long enough to be able to tell you from experience that they last forever, but I can tell you that my longboard (meant for powder) has taken quite the beating this season here on the east coast ice and it still rides with like new characteristics. I have heard of pogo snowboards that have 15+ years of riding on them and still are riding like a 2 week old board (granted they will have needed serious edge work by this time) and the way my board held up i can definately see how that could happen. I find them worth the money. All the expensive materials pogo uses really shows in the performance of the board.
As for Titanal: thats a completely different story... I understand that it helps a lot with dampness, and racers love it, but im not sure how it acts when freecarving. I will be able to tell you in a few months when ive tried out the kessler. 'till then, ill leave it to the guys with the experience.
a lot of people dont think snowboards should cost that much, so they steer clear of the uber high-end gear. Snowboards that arent as expensive are still a blast to ride, and a good rider on mediocre gear can out perform a crappy rider on expensive gear. So basically the decision is up to you, whether or not youre willing to shell out the extra dough for the extra goodies it gets you.