My husband and I bought matching (except for color) Pungo 100s last December. We didn't demo them first, so weren't entirely sure what to expect, but we bought them because they were recommended by the store owner based on our needs, and they were on sale.
Our first time out on the water in them was not a disappointment. They are incredibly stable on flat, slow water, and are speedy enough for us. We have only used them on small lakes so far, but might try them on a slow river sometime. We are very happy with the way they feel, track and handle, and especially love the Phase 3 seating. My back is finicky about how I sit, but I find the seat extremely comfortable.
Our Pungos came with plastic "dashboards" that bungee around the outside of the cockpit, and while the concept is great (extra storage, another beverage holder, would keep spray out to a certain extent), we never use them because they severely restrict entry/exit from the boat. No biggie, though.
Personally, I find the fit to be fine (5'6", 170 lbs), and love the adjustable foot pegs, but my husband, who's about 2-3" taller than me, can't comfortably bend his legs and use the foot pegs, even at the longest extension. Also, we find the rear hatch to be cumbersome to open and close, so we haven't used it yet.
Overall, though, we find these to be great yaks for beginners such as ourselves, and they are great for leisurely paddles (I would even consider just floating for a few hours on end while reading a book), which is our primary objective at this point. A very worthwhile investment.