We are getting ready to start new construction on a 4000 sf home (two-story open floor plan, with full walk-out basement). We have received 2 bids for GT from two local reputable installers. One is a WF authorized dealer (listed as "geopro master dealer". He's recommending the "5 series" unit with a 10/5 year P/L warranty. The other guy is a GeoComfort dealer. His recommendation is the Geo System GXT048, I don't know his warranty info (need to ask). Both estimates are very similar (less than $1500 difference).
I'm just curious on industry recommendations. It's seems like a Ford/Chevy thing. Are there major pros or cons with either of these two systems (assuming installation quality is equal).