looking into a 5" 9mm upper

will be using the RRA/Colt style upper receiver. the rifle will be used primarily with my SWR trident 9 supressor for fun/plinking

spikes is CNCing them from green mtn blanks. can be had with a 1/2-28 thread (i have that adapter for my SWR)

TROS has the 3 lug

i realise that either can be adapted to accept the supressor. however....whats the most efficient use of my money. is there a quality difference between these manufacturers? spikes has them in stock, having more trouble finding the TROS