I will give an update on my X4 repair, but I did get to try the Dart, Softcase, and Felix. The Softcase was nice to use, and the display wasn’t overly loud. The dealer told me that they had several Softcases that were overly loud. I think that if they added a longer cord and a handle power switch, it wouldn’t be a bad choice. I prefer my Healthcare pro to the Dart, the Dart did not feel as smooth in operation. I also did not care for the Felix’s swivel steering, it felt too loose for the amount of movement. The dealer had some refurbished Kirbys, g6 and Avilir 1. They wanted $600 for the Avilir and $200 for a g6 with the worst oxidation I’ve seen. I would definitely satay with eBay or other methods for Kirbys.