I agree with Moke....a dedicated circuit is best if you can. #10 Romex is overkill IMHO....a 20amp circuit on #12 romex will suffice. The #10 is a good idea in that it will more easily carry the load....just don't fuse it at 30 amps...use a 20amp.
A dedicated circuit is a great idea because:
-Voltage will be the best possible as it will not be shared with other recepticles.
-Motor noise will be kept to a minimum.
I would use what they call a "hospital grade" receptical. It's one of the highest quality recepticals you can buy. I would only put in one receptical and use that to supply some sort or conditioner/regulator.
As for the cord upgrade....I would imagine anything other than the stock cords is an improvement.
Maybe I should follow my own suggestions..................