There are so many different ways you can go and how much you wish to spend is the critical factor. You can go the beam scale route if you don;t wish to spends hundreds (or thousands) of dollars. There are a number of innovative methods for enhancing the display/resolution as was illustrated above in Post #6 by Retired Army.
The AD FX-120i would represent the next
realistic step up in price/performance and there are many satisfied users here at the forum. Because you already have one, I won't go into any more detail about the FX-120i, other than to say that I would generally avoid torsion/strain-type balances that typically fall somewhere in between beam balances and the FX-120i in terms of cost. They may seem like a good buy, but can drive you insane with the tare issues and lack of consistency. If you're going to buy an electronic balance, you want one that works by magnetic force restoration. I have come across a few magnetic force restoration balances made in China for sale at ridiculously low prices; effectively the same price range as torsion/strain-type balances. However, I have no direct experience with any of these as to the quality and/or reproducibility. In my experience, you generally get what you pay for.
The next step up from the FX-102i would be something like the Sartorius Entris II Basic Essential Analytical Balance (BCE64-1S, 60 g max/0.1 mg readability). These are very, very fine analytical balances and woul do pretty much anything you could ever want in terms of accuracy and precision in powder measure. However, they'll set you back almost twice the cost of the FX-120i. You may still be able to find a new Entris 64, which is essentially the previous/older model of the Entris II. It is also a fine balance and might be a couple or three hundred less expensive than the Entris II. If you really wanted, you could even spend a lot more on something like a Mettler-Toldeo analytical balance similar to the Entris II. Mettler-Toledo makes some of the finest analytical balances on the planet, but IMO you would be spending a lot more money for effectively the same capability as the Entris balances.
Regardless of what you decide, I would make one more suggestion. Spend an extra $25 and also get yourself one of these GEM20 balances as a backup:
https://www.amazon.com/dp/B00ESHDGOI/?tag=accuratescom-20
This balance was reviewed a while back in an excellent thread started by Boyd Allen:
http://forum.accurateshooter.com/threads/remarkable-little-scale.3985753/
I bought one and performed a direct comparison with a very expensive Mettler balance (post #63). The GEM20 is capable of very close to +/- one kernel precision with a small to medium kernel powder such as Varget, which is quite remarkable considering it only cost about $25.00. I am happy to keep mine as a backup. In the event my primary balance ever fails, I would not hesitate to load for a match with the GEM20. I cannot speak as to the robustness of this balance for daily use over time, but it's really a very nice little balance to have as a backup, given the very affordable price.