I got my 3 Aero500's from here, TW. Got one weighed at our local tennis store, and it came out 330 SW with my strings attached.
I knew the SW couldn't be 308, as listed, because it's not all that different than my 200's or LMRads.
Today, in muggy 65 degree wet drizzle, using old, soft DunlopHDHardcourtChamps, I had no pop whatsoever on my serves, so will try my 200's tomorrow.
Warming up, I hit over 40 serves, and only a couple went IN and hit the backfence up above a foot. Those were with older and softer balls, of course.