i'm late to the party here, but my favorite family of powder is easily Accurate. As a handgun reloader, their powders (2, 5, 7 and 9) cover any and all applications I could ever need. In addition, they flow through a powder measure like water, burn clean and are accurate. I developed a .44 Special load with a 240 gr SWC and #5 that produced a Standard Deviation of 3.1! I've never had a single digit SD in a handgun cartridge before. On top of that, I had occasion to contact Western Powder Co. and I received the best help (and friendly) from a gentleman named Rob that one could ever hope for.
If anyone is on the fence about trying Accurate powders, please do yourself a favor and do so. You won't be sorry/
Regards,
Jon