Sorry about that last one, a little slippery on the "enter" button.
Joseph Phelps' "eisrebe" is worth a try if you liked the inniskillin. I've had the 1998, 1999, and I have a bottle of 2000 stored away. It's pretty widely available and about $15-20 per 375. Not a true icewine, since they actually freeze the grapes artificially, but still attains some of the qualities of the inniskillin, which I've had on a few occasions. Maybe not as syrupy, but a good value. It's hard to justify $50 for a 375 of inniskillin.