Dave if you are looking for a board that will serve double duty as a resort and kite board then a magna board will suit your needs much better,  Just like resort riding on piste and off piste boards are two different things, the twisted is made to handle ungroomed conditions behind a kite, a magna board is made to ride groomers at the resort, its apples and oranges, if you are trying to make orange apple juice then the magna will fit the bill better becuase the twisted is not a groomer board and resort rides poorly. 
Thats really the deal, it you want a kiteboard that rules kiting, then get a twisted, if you want a resort snowboard to kite with get a twin tip be it a magna or a traditinal radius stick ( I picked up a used burton domanit for the misses since the twisted is too large for her for 60 bucks at Max snowboard shop in PC), the problem with resort boards is really the radius size, most resort board including magna boards have a small radius between 7-10 meters, this makes them easy to turn at the resort, but hard to track and much more work under the kite. the twisted board wants to track straight like your kite wants to fly, so they are easy and comfortable to ride while kiting. While a resort board is no where near as much fun behind the kite requardless of the shape, becuase it wants to carve a arc up wind the entire time and needs you to change your imputs and balance over and over every second to maintain control, this is bunk while kiting and cuases musle cramps and is way to much to much work to be fun. I bet I can ride a hour or two a day longer on my twisted then a resort raduis stick using the same energy.
As always Dave I reccomend you try before you buy, ask someone to borrow their twisted, there are plenty around, then perhaps go to a shop and demo a magna. decide for yourself.  I have over a hundred snowboards including, magna, rockered sticks.  Theres a reason I ride my twisted the most, and recomend it to others. If you are kiting with a snowboard, many of us have worked to bring a shape that works best to the market, becuase everything we tried was substandard, there are new shapes being created for kiting, but none of them new shapes come from resort boards that use gravity to turn for a reason.
Plus my jaded take is if you are riding groomers at the resort it should be like this...
http://www.youtube.com/watch?v=x-2kz02s9Uo