Wishing Sterling Irons!! Hands down the best set of irons I have ever played, and that's saying a lot because I was pretty much married to my 560MC irons before these. Played those for 8 years while trying probably 30 different sets in the meantime and nothing came close, yet the Sterlings still sent the 560's to the ho-closet in the garage after just 2 rounds.
I know most people on here aren't willing to jump head-on into single length clubs and by dropping $800-$1000 on a set of Sterlings. But even though I feel they are definitely the holy-grail of SL irons, there are several other models to choose from like the Pinhawk Irons, Pinhawk Hybrids, Integra I-win, and Diamond Tour In1zone, which provide a fairly inexpensive way to give single length a try. And they beauty is they're all available as individual heads so you can buy just a few clubs like 5, 8, AW to try them out before committing to a whole set.