The Gem-Pro's are quite good and in my opinion worth the $211 to your door. (Can't remember the name of the Canadian dealer that quoted me that price in March, sorry)
The only issue I've had is as you add powder to the pan, it will not show the increase immediately. You have to lift the pan slightly and reset it on the scale. Takes about an extra 2 seconds. If you're weighing bullets, just place it on the scale and it shows the weight very accurately, within .02 gr. Also you can't, or shouldn't use it under fluorescent light.
The FX120-i is quite a step up but it costs more than 3X what the GEM-pro does. Worth it, in my opinion, if you weigh out a few hundred rounds at a sitting.
I've also used an RCBS 10-10 scale for about 40+ years. If you're shooting out to 300 metres it does the job very well, beyond 300 and I think you need the extra accuracy of a Gem-pro or the Fx120-i. Just my 2 cents.