I have both the Thermawrap (2005- no pockets) and Micro Puff Pullover (Fall 2006- Polarguard Delta)and can say that they are both good jackets. The Thermawrap is lighter, but not as lofty or warm as the Micro Puff. I use the Thermawrap down to the high thirties and the Micro Puff when I expect colder tempretures (I rarely see temps below the mid teens and never below zero). I carry the Thermawrap more due to it's lighter weight and it suffices for most of my three season trips, but for someone further north, the Micro Puff might be more practical.
BTW: I think you mistyped your title.