Well TimothyH, and especially base2 since you mentioned Stan's A340s which is/was my intended rim...
In case anyone cares - Stan's ZTR Alpha 340 rims (which originally were promoted as 340g then revised & strengthened up to the published 385g you mentioned) and 400's were discontinued months ago. Now Stan's is offering only their leftover 18 and 20 hole versions at pretty good discounted prices, but it looks like everybody else in the world that has any left in any spoke hole variation raised their prices on them almost to the point of gouging.
But moving forward - my latest 20/24 build plan:
Stan's A340 20h rim for the front - 385g
Stan's A400 24h rim for the rear - 425g
Basic low flange Mack bolt-on front track hub - 127g
1-sided low flange Mack rear track hub 197g (or 213g for fix/fix)
44 Sapim Laser spokes ~ 200g
44 Sapim Polyax Alu nipples ~ 15g (I don't mind alu nips and have actually had a good experience with them on my existing light wheels)
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1365g @ $465 parts cost without considering spoke prep, rim tape, or any (outside) building costs
At one point I was after, and even now wouldn't mind, SILVER 20/24h Gran Compe SF hubs, but the last time I shopped for them they were not easy to find & the few places I found them were in Europe for about $150/set without shipping. So I figure what the hell, especially since it is all theoretical ATM - might as well spring for the Macks at not all that much more; and I'd rather spend an extra hundy on hubs over an extra grand on rims
And as an aside...
Many here may already have seen that I do not care for the dearly departed Scrodzilla one bit, and ordinarily I would not mention Retrogression other than to say that just about everything they sell can be bought for lower elsewhere if you search - but it seems like you can tolerate all black wheels, so I do think
https://www.retro-gression.com/colle...pe-sf-wheelset
is a helluva deal for $325 at a claimed 1550g.
If the guy would make them in silver for me - I would take them in a heartbeat, but...he won't...