We full-time on a permanent site, always have lots of laundry, and really like that we can wash & dry at the same time with our stackables. Ours has a handwash cycle which I absolutely love. I would carefully compare the features before deciding, you know your laundry needs. Some people like that their combo doesn't require you to transfer the clothes from the washer to dryer, just put it in and forget it. I'm home all day and like to babysit my laundry, tending to its every need
If I was working or away from home a lot it might be a different story. Just wanted to mention that I went a year without the washer & dryer because of cost, but hoped eventually I'd get them, so I made sure I didn't use the washer/dryer space for anything else in the meantime (well, maybe a couple of plastic bins) like hanging clothes etc. because I didn't want there to be a problem when I did get that washer/dryer with: "but where now do we find room for all this stuff we've been keeping in that space?" Talk about discipline, hey? Also if the combo is out of action for repair, you're hooped. But if one or the other of the stackable goes, you at least still have the washer OR the dryer.