I like the simpler, cleaner operating system of the 180. Plus, the "B" model uses AR-15 mags and weighs only 6 pounds loaded.
Plus, an AR-15 clone nowadays would blow a $1000+ hole in my wallet, and I DO have to convince Mrs. Cut that this is a good idea...
$1000? Where are you shopping? You can get a very good kit gun (all new parts) for %450 and a receiver for $120 and put it together yourself.