I tried several systèmes.Le Fishman Nashville spider is best for me. (No feedback) Its quite natural.
But beware! Two things: If you misplace you can damage it. It is better to hire a qualified luthier in resonator guitars.
Then, unfortunately there are new pickups defective. I communicated with the company IT ARRIVES AND THANK YOU VERY OFTEN! The G ring unless the D string. Etc .... !
Despite these negative notes and random, it is a very good system when it works well.
In your Resonator Guitar