My next RAID upgrade

So I have a 3 full height 5.25 bays available in my case. Here is my next upgrade to add 1.8 TB:

Supermicro (Beige) 5 Bay Hot-Swapable SATA HDD Enclosure, MODEL CSE-M35T-1, New Egg, $113
3Ware 9500s-8 SATA PCI RAID controller, New Egg, $489
6 Maxtor 300GB SATA 16MB buffer drives, New Egg, $185 each (already $9 cheaper) total 1,110

total: $1,712.

I still have room on my current RAID so I won’t buy this for another three months or so. I expect the hard drive prices to drop another $10 or so. I am ordering 6 drives to have one hot spare (it is a 5 drive enclosure). When I get the 3Ware card, I will probably add some of the non RAID drives now in the box to it and make a larger RAID. I thought about going up to the 400 GB drives, but they are 80.5 cents/gig versus the Maxsor 300 which is now 61.7 cents/gig. The Segate 300 gig is 69.6 cents per gig and claims a 8ms seek time versus a 9.3ms (nearly 15% better), but I have not found the Maxtors to be too slow so the difference isnt’ worth the extra $144 buckos to me. If I wait long enough, they may come out with the 500gig drives and drop the 400 gig drive prices. It seems like the manufacturers just keep the same price waterfall and when a new larger product comes in at the top they just bump down each other product one level. If that happens, I should expect to be paying about $185 for a 400 gig which would be about 46 cents per gig. I bet I will be able to find it at those prices by the end of the year.