I recently switched from Jerboa and apart from an issue with the subscriptions list not changing when switching between accounts, it's a much better experience when scrolling through communities with loads of images and browsing in general :D
So far Thunder has been the best Lemmy app for me.
Yeah the subscriptions not properly refreshing on account change is super annoying. As a work around, hitting refresh on the feed view will refresh the sub list. Definitely something I want to get around to fixing soon.