I'm looking to upgrade my Lowrance Elite 7 Chirp with a unit that has down scan and side imaging.  I've decided to purchase a Lowrance elite 9 TI unit but then learned that a new TI2 unit is being released with so called "active imaging" and a few other new features.  I'm looking for opinions from folks on if it is worth waiting for the new TI2 or just get the older TI unit on sale this holiday shopping season (I see the Cabelas ad got leaked and they will have Elite 9 TI units with the Nav+ chip for $600)  I've tried researching the new features on the TI2 units but there isn't much out there for people that already have their hands on one.  Wondering if anyone has any insight on if the new features are worth the extra price of what I could get the older unit for?