Talk me out of Xtrans IV.

Currently using an XTrans III body. Had an XTrans IV body for a very short bit but sold due to financial reasons.

I have the urge for a new body and can’t decide to go for another XTrans III so the pics are the “same” or go for the XTrans IV body to get some of those newer film sim options.

JPEG shooter only. I understand the auto focus and the other tech specs. Just talking about feelings here. Anyone gone from XTrans III to XTrans IV and regretted it?