I think there are a few around here proficient with both. Hopefully, they’ll check in. PS and Lacerte are completely different platforms, so there’s going to be a learning curve to get used to the navigation and workflow; how difficult is up to you... call the sales people and take it for a test drive. Have them convert a few of your most complex returns while you’re at it. The biggest difference is that PS isn’t as robust (or expensive) as Lacerte; but that will depend on your practice... you can always use Lacerte on a pay per return basis if you have a few clients that PS can’t handle. I’ve been using PS for 30 years and (aside from the annual complaints about what’s broken in the early releases) it works pretty well.