I am doing a custom build and can not decide between a Stag upper or a Del-Ton. Anybody got any info which is probably the better route?

I would buy the STAG LE SBR uppers
they have 4150 1/7 twist  MP bolt/carrier
M4 14.5 they can weld phantoms or you can get the 16.1 inch M4 uppers

unless you want a SS barrel upper
that Stag 18incher looks nice

Theres also LMT/BCM

I would go with Stag.

Ive got a Stag 2H rifle kit that I built as my second "nice" ar. I've had it for years and have lost count of the the rounds that have been through it. Its also the rifle I let people use when they want to try and fire "that black one!". Its the 1/9 chrome lined barrel so it runs well with my black dog 22 conversion kit. I don't see getting rid of it anytime soon tho I have thought about having the gun cut down to a 14.5 and another comp pinned on to it.