IMR 4320 will work well in 99.9% of 17Rem's. Fairly clean, good velocity, but doesn't meter as well as some I've used. It shoots good enough to not be a deal breaker though.
WW760 = Accurate, kinda dirty, lacks velocity, meters well.
AA2700 = Pretty much the same as 760. Maybe a tich slower.
My all time fav, N140 = best accuracy, fast, clean, and meters like water. Only draw back is it's a little more expensive and you'll probably have to order it. Well worth it IMO though.
Sooo, my preferences in order.
1) N140
2) IMR4320
3) WW760
4) AA2700
Other powders are known to work, but these are the ones I've played with for 25+ yrs.
P.S.,,,, Good find on the Bergers. Problem is, about the time you get your loads worked up and start having fun you'll need more and there won't be any.
Welcome to the 17cal world.