External Drive options for iMac G5

I just ordered two 160GB drives to use as externals for my iMac. I was going to put each one into a StoreTecc external firewire enclosure and attach them as separate drives.

Is there a better way to do this? Are there any enclosures that hold multiple drives? RAID?

I assume you want to go FireWire. These are the only Firewire enclosures I know of and they are expensive.

http://www.wiebetech.com/products.php#storagesystems