Read reviews for the M.I.T. Inflatable PFD by Mustang Survival as submitted by your fellow paddlers. All of the reviews are created and written by paddlers like you, so be sure to submit your own review and be part of the community!
I bought the Mustang Survival M.I.T. inflatable PFD (manual inflate version) to use during the heat of the summer. I use a conventional PFD for the rest of the year. I usually wear my PFD at all times but the summer months in Alabama prove to be too hot. I love the light weight of the inflatable PFD--you feel as if you are not wearing a PFD at all. I bought the manual version of the M.I.T. 100 as I didn't want the PFD to auto-inflate if it fell into the water.
The only negatives to this PFD (I kayak to fish!) is the absence any accessory points on the PFD. I would get use out of a knife attachment point, a pocket and a loop of some kind (for a zinger). These negatives are not deal breakers. I bought the M.I.T. on sale and it was a very good purchase for my needs.
Just note that an inflatable PFD must be worn at all times when on the water to be legal unlike a traditional PFD, which just must be present in the kayak when on the water.