I used the original version of Gazette for a while initially before switching to Byline, which I was fairly happy with. But then the new version 2 of Gazette came out which was much quicker and a nicer interface than Byline imo. But then omz:software came out with Newsstand 2.0 with true 2-way Google Reader syncing, and this along with a fantastic new interface won me over, and I'm now using that. I'm keeping an eye on NetNewsWire as I use it on my Mac, and am interested how this will pan out, but Newsstand is going to take some beating. It's way ahead of the competition now imo, with the only negative being sync speed - it's quite a bit slower than Gazette 2.0, but all the other features make up for this, and it's one of those apps that's simply a joy to use.