Need some advice. I currently have a base model 2012 15" rMBP and a base model 2014 27" 5k iMac. Looking to upgrade the rMBP to one of the new ones. But I can't decide if I should keep my iMac and just get a 13" MBP, or if I should sell the iMac as well and get a 15" MBP with the 4GB GPU and one or two LG UltraFine 4k displays. My usage: - Photo editing in Lightroom at home and on the road. - Some 4k video editing (mostly at home) - General web surfing and youtube watching both on the road and at home - Gaming (mostly at home)(The Long Dark, Kerbal Space Program, Transport Fever(when out)) The reason I'm looking at a 13" MBP is to not have to drag around the 15" MBP. Smaller and lighter = easier when traveling. But it's not a deal breaker. The reason I'm considering selling both the MBP and the iMac is not having to have two different Lightroom catalogs for instance(or having the catalog on a external hard drive. Just one machine to do it all. But the concern with this solution: is the MBP is powerful enough for to run at least one 4k monitor and a game like Transport Fever on it at at least 1080p? With some kind of stream on the MBPs 15" screen. Or editing a 5 min 4k video in Final Cut Pro on the 4k LG without to much lag? Can't decide which option to go for. Love my iMac, so will I miss it if I sell it? Or will the new 15" outshine my 2 year old iMac. iMac has QC 3,5 CPU, 8 GB ram and 2GB GPU. New MBP I'm considering has QC 2,7 CPU, 16GB ram and 4GB GPU. Less ghz processor but newer gen.