Re: Aquarian Tom Head Help
They were in stock where i bought my heads (this week at one of Aquarian's featured dealers listed on Aquarian's web page). Make sure you call around as prices are all over the place. The Performance IIs (I think) are big sellers for Aquarian so i doubt they are replaced. The categories listed on the compare page are pretty representative.
Aquarian has samples on their homepage under "hear the heads". That could help you as well. ;-)