"this is what I want, which 3d printer should I get"?

[cipher0]

Hi guys.
I've finally decided to get my first 3d printer.
I've been thinking about this for over a year.
I'm a 3d modeller.

I hope you guys can help me decide which 3d printer to get.

I was thinking about Solidoodle for few months, but lately found out about Davinci. It costs around $300 less so I can spend that on something else like Filastruder, and it has the same characteristics which I need.

This is what I need:

1) at least a 100 micron minimum print resolution
2) at least 20 cm cubed (7.8 inches) print size
3) 1.7 mm nozzle
4) not cost too much ($500 will be a great price, $700 would be pretty nice)
5) be available for purchase. No Kickstarter/Indiegogo, etc.
I'm not a tech guy, so the hardware being open source is not a big deal for me.
Print speed is also important, please mention.

So what will you guys suggest? Should I get the Davinci instead? Is there some other printer I'm not aware of which fits my requirements and you think I should check out?
Thanks!