I have been reloading for 25 years and shooting my 10ML-II for over 5yrs know and I have had and used ballance beam scales made by Hornady, RCBS, Redding, and Lee. Hands down do doubt in my mind what so ever RCBS makes the best ballance beam scales you can buy.
If money is a issue I would recommend the RCBS model# 5-0-5 scale, if not then get the best ballance beam scale there is IMHO the RCBS 10-10.
I own both and they both have served me superbly well. The other scales ended up being "gifted" to my friends who were getting started out in reloading.
I would not under any cercomstances even consider reloading with out having a good ballance beam scale to use to dbl check my powder charge weights. I also own a PACT digital powder scale and despencer and use it to dispence 100% of all my powder used in my CF rifle reloads and for my 10ML-II as well. I dbl check every single powder load, every time with out exception.
Been using this system for over 10yrs now and have had zero problems and are 1000% satisfied with my powder charge weight accuracy.
Get yourself a RCBS 5-0-5 you wont be sorry.