Get A Maytag, Period.

If you're looking for a modern machine my money is on the Bosch.  I have had two of them and been very happy with both.  Now if you're interested in a vintage machine..................:)  I can't speak to a modern Maytag because I haven't had one.  

Well, I don't want to complicate things, but my one experience with a Bosch was fraught with disappointment and disgust.  Performance was horrible, cycles lasted far longer than comparable ones on my Miele,  components were flimsy, and the layout of the racks was perplexing at best and inefficient at worst.

I've had my Miele for almost two years.  I got it used at the ReStore, so it's older than that -- like maybe from 2005.  I've never been more delighted with results from a dishwasher than I have with my Miele.  Glasses sparkle like no other dishwasher I've owned could ever get them, and we have fairly hard water. 

I'm afraid a brand new Miele will run you nearly double what you have budgeted, though.

If your goal is an updated look in the kitchen, then I guess finding replacement components for your Ultra Wash isn't something you'd consider, but that is a very capable dishwasher.

Here's a link to a KitchenAid find that would be close to your budget:

As I mentioned I have had two Bosch dishwashers.  

I purchased a condo in LR in 2002 and put in a TOL Bosch with the hidden controls at the top, etc.  I think I paid around $700 for it.  I recently talked with the woman who bought the place from me when I sold it in 2005.  She said the dishwasher and stove (Kenmore Elite something or other) are working great and neither has required service in the almost 10 years since she bought the condo from me.

The other one I put in this kitchen when I bought this house in 2005.  Same TOL, hidden controls, etc.  Hubby had to have new, shiny, stainless BLAH!!  That lasted in the house until about four years ago when I took it out to replace with a vintage Kitchen Aid machine.  I sold the Bosch to a friend who is still using it.  It's been serviced once because a kernel of popcorn got caught in something that was blocking water to the top wash arm.

I was very happy with the performance of both machines.  So, really, I've been lucky with the Bosch some not so much.  I think they get good ratings for the most part.

I did forget about the Miele machines.  I've never owned one because I do prefer the older Kitchen Aid machines.  But I hear they are spectacular machines and likely more than you want to spend unless you want to go second hand and can find one.

.........but one more thing to consider.

Rack configuration.  Does it work for you?  I bought a Dacor dishwasher a few years ago off of Craigslist that needed repairs.  I made the repairs and installed it in my kitchen.  I felt quite quite proud that I had scored such an expensive machine for a very low cost.

Well that thing wasn't in my kitchen for two weeks before I took it out and sold it on Craigslist.  It cleaned like crazy.  I can't complain about that and it was very quiet.

But I have over-sized dinner plates and the damn things just didn't fit well in this machine.  I had to move the upper rack all the way up so the plates would clear the upper wash arm.  What that meant was none of my over-sized glass ware (gee am I seeing a theme here, maybe that's a topic for another forum) would not fit in the upper rack.  Nor did some bowls and other things I would normally wash on the top rack.

What I like about the vintage kitchen aid machines as well as many other machines is the ability to raise and lower the upper rack on either side.  This Dacor required the entire rack to be moved up and down.  It was a tall tub machine but I think the upper wash arm hung down to low.  It was just a poor design in my opinion.

So while you consider everything else that's been mentioned here also consider what you'll be washing and if you have anything over-sized take it with you when you go dishwasher shopping and make sure it fits in a way that works for you.

Did you make a decision yet on which machine you'll buy?

David, the current Maytags are the only dishwashers on the market which meet all 3 of the criteria you listed above.  I'm not going to go through this thread and see if anyone else has suggested them.