I've worked with COMSOL (I have a smaller amount of ANSYS experience to compare to). For the most part I preferred COMSOL's UI and workflow and leveraged a lot

I've worked with COMSOL (I have a smaller amount of ANSYS experience to compare to). For the most part I preferred COMSOL's UI and workflow and leveraged a lot of COMSOL's scripting capabilities which was handy for a big but procedural geometry I had (I don't know ANSYS's capabilities for that). They of course largely do the same stuff. If you have easy access to COMSOL to try it out I'd recommend it just for the experience. I've found sometimes working with other tools make me recognize some capabilities or technique that hadn't clicked for me yet.