Not sure of your motivation for aluminum rims so I'm taking a guess here.

If you're spending some significant coin you could get a set of used carbon wheels. Street price on a normal width rim wheel set is pretty low last time I checked, especially light, stiff wheels like the Reynolds DV46 or similar (Assault? Too many Reynolds wheels for me to keep track of). DV46 tubulars are so low valued that I lent mine to a teammate instead of selling them for the $400 or so I could get for them, and he's still on them (they're 8 years old now). I sold a set of DV46 clinchers for $450. Those are some light wheels, pretty fast, just not as aero as the latest tall/wide wheels, but significantly more responsive than box or semi-aero aluminum wheels. Back in the DV46 days I had a slew of box alum tubulars as well as box alum clinchers and finally other aero wheels (Spinergy Rev-X, Specialized TriSpoke aka HED3, older Zipp 440).

If you want aluminum for some other reason then ignore what I just said