I've never used them...but it seems that you have gotten some good reviews here (and from that lady at the store as well!) so it's probably worth a try.
Personally, I use Huggies and every time I have tried to deviate from them I ended up disappointed (with other store brands- not Costco- and also with Luvs- which my friend swears by) and I go back. The only other ones that I have seen in action are the Pampers Swaddlers (nb dipaers)- they use them in the hosp where I did my clinicals for OB and I really liked those as well. Well, that was probably more than you were looking for about the diaper situation- sorry

- Good luck trying them out...they just may be the best thing for you. Get a package and try them out as a trial run that way you are not stocked up if you happen to dislike them.
btw, I LOVE the nursery! I wanted to do the jungle theme with ds2 last time but all the sets I could find were too unreasonable for me to buy at the time. I do love it though. And the animals up on the shelves in the pics you shared- too cute!!!