Well Foodstick,

It can use pinned and plain end blades. "Yes! Now I can use plain end spiral cutting blades to cut out notches on the fly!"
18.5" throat, "Now I can cut out 37" cord ribs"
The controls are mounted on the head.
It has variable speed that can be set as low as 450 RPM.
Working dust blower, "until it stops working then it's back to the fish tank air pump".
It weighs 50 pounds, 30 pounds more than the old one. "less vibration, though still bad compared to a $600 Dewalt"
Fully adjustable table that can be set to a square 90` to the blade! Can be set up to 45` right and 5` left. Notches at 15` increments.
Vacuum hose connection
Tooless blade changes with a one step blade tensioner mounted on the head.
Cool carry handle, did I mention that this thing weighs 50 pounds?

The first model 1800 had a LED light and a disk sander on it. They had problems like the LED bulb not being replaceable and the fact that disk sanders suck at sanding small thin parts like you would cut on a scroll saw. So Dremel came out with their best and last scroll saw model 1830 that is just a pure scroll saw. Dremel/Bosh doesn’t make scroll saws anymore.

Here is a pic of the 1800