I have a fluidyne in my hatch and I have no complaints. I wasn't too thrilled about the price either, but I figured, why spend a little money now but end up upgrading again later and having to spend more. I was having problems with overheating too, specifically lots of highway speed driving (high rpms) or just a lot of idling on really hot days. Since installing the fluidyne, I haven't had a single problem. I'm still waiting for a real water temp guage to fall out of the sky since I'm usually too poor to buy one, but the stock gauge never goes hot anymore.

I know a few people using the Del Sol radiator without any troubles and the full sized GS-R radiators as well. I'm assuming engine ice is a coolant addative, similar to Redline's Water Wetter. As far as I know, those do work but I perfer to fix coolant problems with a better system as opposed to magic chemicals. Seeya.