I agree with the above list on Grinders, Tho I might add the Mazzer Major to the list. Slightly taller then the superjolly, and burrs are 83mm instead of the 64mm(right?) on the superjolly. Used, they roughly go for about the same price, 450-500.
For the Machines, I would consider a double boiler. Not saying DONT get a Heat Exchanger, I have one, and I like it. But a double boiler takes out some of the learning curve in regards to temperature management of the HX machines. That said, using an Hx IS NOT HARD, and once you get the hang of it, superb shots are easily attainable.
So, to add to the machine list:
La Spaziale Vivaldi/Vivaldi Mini
Izzo Alex Duetto
Vibiemme Double Domo
Expobar Brewtus III R/V
In the simplest way of explaining it, and Double Boiler heats up to the temp your desire, Flush ~2oz of water, and its at the temp you want. A HX machine requires slightly more attention to temperature, as the boiler is set above the boiling point, with a tube running through it. The water used for brewing comes from the reservoir, and flows through that tube in the boiler, heating it up to brewing temp. To read about it more accurately, see
How I Stopped Worrying and Learned to Love HXs. Again, both machines can pull great shots, its the usage that changes. I like my HX, ill be upgrading to a DB in the newyear.