The IMS screen is a great value upgrade. I was very disappointed with the water distribution (almost single torrent) tearing up the top of puck on my new e61 Lelit mara, very hard to keep clean and I have to assume not contributing much in the way of an even extraction. IMS screen, nice slow droplets, not to much seems to stick to it even when dosing high. Easy wipe clean with microfiber cloth, a lot less crap coming out of 3 way. Coupled with VST and pergtamp, just consistently great shots. I guess stock shower screens may differ from machine to machine some being better than others. So for some people there may not be a MASSIVE difference.
