Yes, if you're doing it by 'hand' then you want the heaviest trickler out there, I know lyman, hornady, and I believe lee and rcbs are all plastic. Redding makes nice stuff.
The reason you want it heavy is so that if you 'bump' it, even slighly when approaching the thing, it will drop powder in an uncontrolled manner, completely the opposite of what a trickler should do.
That said I have a Lyman, its adjustable for height so I can use it with taller scales. I rarely use it though, as my electronic 1200dps does it all automatically. Slowly, but +-.1grn.