Hello - Yes, we have a 2005 Fleetwood Newport and love it. Some don't like the Newport since it doesn't have a slide out, but it works well for us and we like the outside storage trunk. We debated for a while about whether we needed the high wall, but the hard wall shower and potty are a nice feature. Very convenient to use the potty, change into bathing suits, or take a quick shower without having to empty everyone out of the camper.
We cook mostly outside on the grill or outdoor stove, but have used the indoor stove a few times. We used the oven once to make some cookies for the kids, but don't see using it too much. We use the microwave all the time to warm lunches, kids meals, etc. With that said, you can get the stove and Microwave on the non high-wall models so I wouldn't recommend basing your decision to get the highwall for the oven as you probably won't use it much.
Another topic which has been a subject of debate is the new "real potty" in the 2006 and 2007 models. This system uses a black water tank instead of a cassette so you need to either be hooked up to a sewer connection while camping, or take the trailer to a dump station at the campground to dump it. It's not an issue at FW as you can easily get a Full Hook up site with sewer, but if you camp at other places and don't have a sewer site, you just have to be vigilant about how often you use the potty and facilitate dumping. There are many threads on the pop-up message boards that debate this subject.
Lastly, keep in mind the weight of the high-wall Highlander trailers and whether your Tow Vehicle can handle it. Especially once you get it loaded with gear and supplies.