Advice on HiRes printer choices

[JimB]

I'm approaching the purchase of a 3D printer from the opposite direction to many of you: I have a specific mechanical device I want to make, that consists of <20 mechanical parts that must work together, for instance with two parts sliding together on a dovetail. For this I need good mechanical accuracy, so a high res printer seems to be essential. I need to make parts that will be no bigger than 4x2x1 inches, and I need a moderately strong product. If I can get the product working in plastic, the intention is to replicate this in steel, but I want to be sure of mechanical function first. If my budget is ~ 1000 (euros/pounds) what is the best machine to buy?