Personally, I feel the same way about my own precision AR' uppers. I currently don't even have a precision 18" rig, but I've got one in the works.
I do have a 14.5":
And a 16":
The 18" I have planned will have our custom Noveske SPR "Mod 2" barrel with 1x8 three groove and rifle length gas system, Ionbond Diamondblack coated (gas tube, too). LMT proof round tested, MP-inspected bolt, D/B coated down to the gas rings, fitted at precisely 1.4646". Young MFG National Match carrier, first forged, then centerless ground, then hard chromed, and THEN D/B coated, along with the LMT internals. PRI Gas Buster, of course, for suppressed use. Surefire MB556 for SOCOM can that is bound to get here some day.
I have a couple of scopes I'll alternate on it to see what suits me better. The logical choice for any precision AR' is the new Nightforce 2.5-10x42 NXS. But, I have an older spare NF 5.5-22x50 NXS that despite its size and weight is a real luxury for old eyes. Who cares if the rig ends up looking like a scope with a little rifle under it?!?
The lower will be a Vltor with A5 recoil system and H1 buffer; Geissele SSA-E trigger; SPR pistol grip: and prototype fixed stock being worked up by R&R.
I'm undecided on the "chassis", the receiver/forend. While I'm pretty excited about the Vltor VIS-3 in KeyMod format, I think I want a longer forend than 12". So, a Vltor MUR with forward assist and one of the following forends: Noveske NSR; KAC URX 4; Geissele Mk 4; KAC URX 3.1; PRI carbon fiber Competition forend in natural finish; or maybe a Seekins IRMT3 upper with SP3R forend???