You are exactly right.. the gemini pro is pretty good for 10mg and above. You can go lower, but its harder to get a good read... If you plan on spending 400-700 for a .001 resolution scale, then you should be okay.. check up on the scale forums (im sure they are out there) but the milligram scales that cost less than 100 bucks are just really good guestaments. If you need to be 100 percent accurate at .001, then I would do what you are doing and invest in higher end/professional scale.. Let us know which ones are good, etc.. The only ones we talk about here are the cheap ones. (Although, the gemini pro is probably the best cheap one out there) Its amazing how many people think that their pocket size 50 or 20 dollar milligram scale is "PERFECT"! just because it seems to give a consistent rating, what most people don't realize is that if the stuff you are trying to weigh isn't perfectly set on the scale, it possibly wont weigh it right... Those cheap ones are VERY unreliable, they are okay to make sure that you wont kill yourself (as long as you are okay being a few milligrams off), but if you can, invest in the good, professional ones.... Keep us updated...