Thanks for the input.
I see where it might be problematic right now, with four people living in the household, but honestly, it seems that if we'd just readjust our mindset it would be find. My oldest moves out next year for college, and then youngest a couple of years after that, and then it's just my husband and I, for which such a machine would be absolutely no problem. Like I said, we already hang out a lot of laundry anyhow. I also work 12 hour shifts, so it'd be nice to put the clothes in before work, and they'd be completely finished and dry when I get home.
I did call our regular appliance repair man, who said that, while he doesn't have a lot of experience working on them simply because not a lot of people own them, he is familiar with them and comfortable working on them, and he is certified by the manufacturer to do so.
I'm still not sure. One issue is space; while we have a bigger house now with more space, the laundry area is NOT spacious at all. In face, it's only big enough for a washer, and the people who lived there before us had the dryer in a completely other room (and floor!) of the house. Another is noise; the laundry area is off of the common area in our basement, and having only one machine would create less noise. A final issue is cost. The combo unit is cheaper than buying two separate ones. However, cheapest would be to buy only a washer, and buy a dryer later. If we did that, we'd have to hang out everything, all the time. If we purchased a separate washer and dryer, we would also have to do some remodeling to accommodate for them. We were planning on gutting the basement bathroom, at which time we would make a larger laundry room; but we can't afford to do that right now, so we probably wouldn't buy a dryer for approximately 6 months (until our old house sells, which seems like it's going to take a while, unfortunately).
At $1500+, it's an expensive item, but it was a cost I knew we were going to incur. The idea of one machine is growing on me, but if I don't like it, that's a very expensive mistake, and a long time to live with an item I don't actually like.
Again, I appreciate everyone's input. I'm still mulling it over....any additional thoughts are greatly appreciated!