I'd like to upgrade my Dell 4K 60Hz display to something better for gaming, without losing the 4K resolution for productivity. It seems the Acer Predator XB3 is the way to go. However, I can't find it in stock anywhere unless it's a refurbished version. Is this model just difficult to find? Is it about to be replaced by a new version? Any other recommendations for 4K, 120Hz+, IPS, 27" displays around $1000-$1500 ... which are actually in stock from a major retailer with a good return policy? Thanks!