Welcome to the JOF, Suprzsuprz. I can't comment on the Greyhawk other than to say they look very nice. I see them every so often at campgrounds. One thing I might mention is many Jayco owners have purchased new units from RV Direct. They're quick to give you a price quote and from the reports I've read, the experiences are usually quite good (except for the PDI wait during the busy season). If nothing else, it would give you a good data point on pricing.
Mike, Sue, Sissy and Little Man
2015 Ford F350 Lariat FX4 6.7 CC DRW
2015 Eagle Premier 351RSTS