The 7577 is pretty great, I have the 4K version, with an I7, 16Gb RAM, 512GB nVME SSD + 1TB HDD, and Dell's service is the best I've seen. Infact I bought a $700 refurb 7567 (1080P, I7, 8GB RAM, with 1TB HDD) that had uneven core temps and after complaining twice they gave me this fully maxed out 7577 which is wortharound $1,300-1,400, for no additional cost, they call it a "system exchange". Another nice addition is the fingerprint sensor in the power button. Plus Dell doesn't void warranty for upgrading parts and they don't have white lists like Lenovo does for WiFi adapters.
HP and Acer I would avoid like a plague, never seen anyone with one of these that lasted more than a year or two without issues.
If RGB lighting is more...