i found the 155s awful, they absolutely killed bass for me on everything I tried it with. I prefer using cp145 for wide nozzle, it’s a bit of work to get it on there but way more comfortable and the sound difference is huge to me.

I have zero blue and hexa. bass much bigger on the zero, hexa I prefer for more neutral things where bass isn’t as big a deal. soundstage much wider on the zero.

I have medium sized ears and I find the zero uncomfortable to wear for long periods of time, even with changed ear tips. hexa I can wear all day no problem. Imo, they’re honestly quite different, depending on what you prefer. Mids and highs better on hexa but it’s lacking bass in comparison.