Need your prepurchase thoughts

[RockyRoo]

Hey Everybody! We currently have a hybrid chasing a 2015 Silverado 2500 Crew 6.0 4x4 Z71. We are looking to move up to a Grand Design Reflection 337RLS. First of all, does anyone have any experience with this coach and what are your thoughts on it, both specific and in general? Second, how do the more experienced 5er towers thinks this truck will handle this combination? Is it enough to vehicle or do we need a Duramax or even 3500 for this setup? I am not one to push my trucks to their limits, but I realize by the numbers this rig will push my truck pretty much right to it's limits.

Thanks for any input you can provide