A few times a week, I use the same Iwata I bought over 30 years ago (HP-BC2), all original, nozzle and needle. Two years ago I bought another, just so I could have a quick color change gravity feed for figure work. It's the exact same design and quality, no drop off after 30 years.

Whatever you decide to buy, look at Chicago Airbrush for price and service, unless you're sticking with Badger and can find it at Micheals with 50% off coupon.