This would be my Top 10, based on your criteria of NHL ready-ness
:
1. Hannu Toivonnen- If you still count him as a prospect
... He's penciled in as the Bruins starter this year. He could do big things IMO.
2. Jimmy Howard - Another good year in the AHL and he could very well be the number 1 guy next year in Mo-Town.
3. David LeNeveu- Heir apparent to Cujo... like Howard, he could be the starter as ealry as next year.
4. Josh Harding- Will be backup this year... after a few years he should be ready to take over the reigns from Fernandez
5. Justin Pogge- If everything goes according to plan, he could be ready for NHL duty in 2-3 seasons
6. Carey Price- Again, if everything goes according to plan, Price should be ready for starting duty in 4 years.
7. Marek Schwarz- A lot of people have given up on this guy, but I think if he's brought over and gets a couple of years of AHL apprentiship under his belt, he could be a very good goalie.
8. Thomas Griess- Goaltending is crowded in San Jose right now, but they should make room Griess in 3-4 years
9. Al Montoya- He should be NHL ready soon... 2-3 years... but will it be with the Rangers?
10. Devan Dubnyk- Needs to adjust to the pro speed and game... but there should be a goalie opening in Edmonton 3-4 years from now and he should be in the thick of it.
There are other great goalies out there... like Rask, Pavelec ect... but by they're likely more far away from NHL duty.