I run both a Gleaner C62 and a Deere 9610, and I was set on trading my C62 on an 8780XP; - that is, until I tried a 9650STS, now I'm not sure. The Massey is a far simpler design, and it's a proven design, but the Deere pushed an 8 row cornhead a full mile per hour faster than the Massey. I have only 4 owners locally who have been running STS's, and they all like them, but I also have an awsome local AGCO dealer as well. I'll probably stick with the Massey, merely on the grounds of simplicity and price; - the Massey is about 23,000 (Canadian) dollars cheaper than the Deere!