MicroKORG S : The most pros/cons synth I know of.

Cons. Only 5 knobs at the top and 2 big clicky ones in the middle. Massive list on the right side for reading and reading. Then turning the correct middle clicky dials assigns the 5 top knobs to different effects/parameters. No sequencer. Only 8 steps (the orange ones just above the left side of the keyboard).

On and on it goes until you get the hang of it or it drives you mad.

Pros. Get a cheap second hand, 5 pin midi controller and the microKORG expands into a fantastic synth. The controller enables you to not have to read the written menu anymore, and instead assign most of the words on the menu to a specific knob or fader on the controller. The microKORG sound engine is sort of opened up, allowing you to get at a lot of the features instantly. I really like it and now I hardly use the controller after realising what it can do but I think that it helps a lot to have an external controller.