Fastest ATA drive?

[Allan Speers]

I've spent a great deal of time researching scsi subsystems, and have gone that route for my large, 88.2K sessions.

However, I have an empty internal bay just sitting there on my (original model) dual 1-gig mac. I might as well put an ATA drive in there for back-ups, smaller sessions, etc.

I have several questions for those of you who have really researched ATA drives:
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1: Of the Ultra-100 ATA's, which is best for Protools, the Barricuda, the IBM 120GXP series, or the Western-Digital JB series ?

2: I have not seen any benchmark tests for the (new?) Ultra-133 ATA drives. Are these drives any faster for protools sessions (ie faster seek-times?)

3: Will the stock ATA buss in my Mac take full advantage of the ultra-133 drives, or would they require a pci controller card? has anyone used such a card successfully with Protools?