I haven't seen a Koyo copper radiator-- their cheaper aluminum one has plastic tanks (and I've only seen that on eBay). With more favorable opinions here, I'm thinking I'll stick with the CSF-- it doesn't really cost any more. May as well replace the hosen while I'm at it. Anything else I should do while I have the bastard taken apart?
idlafie: I didn't flush it every year, but certainly every other at least (with a back flush kit). While I'm sad my car is out of comission until I fix it, I am certainly not dissapointed. I had an '89 s13 that I sold to my sister, it's radiator had the same problem earlier this year (doing the math. . . 16 years). Cracked in the exact same spot, on the left side of the hump for the upper radiator hose.
EEdude: Definitely got some sort of problem-- does your heater still work? When my thermostat wore out, I couldn't get the car to warm up in the winter. This made for some frigid drives home. I'd even turn on the AC in the hopes that the extra heat of the compressor would warm up the engine a bit. Alas, equal and opposite. If the engine isn't getting warm, replace the thermostat. Otherwise, do what the other dood says. Or just ignore it. It's your damn car :P
Not to be an ass, but I trust what I think I need more than what you think I need

I really just wanted some discussion on options to find the one that meets my needs. Plus, now there will be a "cheap radiator" thread that newbs (and oldies like me) can search
If only I had an RB to plug into it. . . That motor looks quite nice, aside from the red filter, it looks like it is factory installed. Bravo my friend, bravo.
Thanks for the help, gentlemen. Feel free to continue the discussion.