I'm a dabbler rather than a player these days.
I have an FP-4, which looks like the equivalent instrument to the FP-60, one down from the FP-90 that you linked to. I've had my FP-4 for about 10 years now, it gets played every week (sometimes more than once) and is still as good as the day we picked it up. The action is superb and it has a wide range of non-piano and midi sounds. It's sort-of portable but if you need something just for home use the FP-60 might be a cheaper alternative to the FP-90.
If I need portable I have a V-Accordion 🙂