Harder & Steenbeck Infinityis worth considering if you're looking to upgrade. Known for its exceptional precision and quality, the Infinity airbrush is a step up from Iwata in terms of user control and customization. Its unique features, like the quick-fix end piece for easily adjusting paint flow, and the adjustable trigger tension, offer greater precision, ideal for fine-detail work. The Infinity's design also makes cleaning simpler. While it's pricier, its performance and ease of use can make it a valuable investment for serious airbrush users.