It seems like a lot of really expensive synths and electric pianos do only a few things which don't really seem worth paying all that money for separately. Like, maybe I would if I had it but there must be a kind of electric piano which has the capacity for you to install soundfonts and stuff on it, also? So you can just use it as a synthesizer?

That's what I want. I want it to sound like a real piano, but I also want the ability to just turn it into any synth I want using sounds I make on my laptop.

There is something called an usb midi controller (look for m-audio) you can plug into your laptop so your laptop can make any kind of sound you want, even realistic piano or guitar or square wave if you pirate the right plugin

If you wanted a really cheap solution for that you could get a Korg nanopad. I bought an axiom midi controller with 61 keys and more sliders than I'll ever need. It makes me happy.

I am looking for a VST that does something similar to this http://seawitchery.tumblr.com/post/4070384205/i-started-out-clicking-strategically-and-by-the