Due to my wavering on the River Water / GEO combination, my installer is recommending Westinghouse 24.5 IQDrive. Looks sweet. I was looking at Carrier Greenspeed early on in my investigations. My installer is VERY thorough with a great reputation in GA. He's been in and done all the sizing and leak tests etc., so I'm inclined to trust his judgement. I can't find many sites (other than the manufacturers), that talk about the pro's and cons of Westinghouse / Nordyne. They obviously are not common - the IQ drive yet. I've seen all teh video's and "sales" pitches now of both GreenSpeed and IQdrive. Thoughts anyone (yes I know it's a GEO forum) but you guys seem to know a lot about a lot!