[AZLiberty]

I really hate giant holes in the side of guitars. Now if you are gigging with it constantly I certainly understand the appeal of having all the controls right there.

I had a K&K pure mini installed in my Rainsong. Only issue with the K&K is that since it's passive it may or may not play nice with the house sound system. I have learned to always carry a DI box with me just in case. At home it's fine, and if the house board has good impedance matching it's fine as well.

Another advantage of the K&K is it's one of the least expensive options available.

Otherwise, I also am a fan of the Fishman Matrix Infinity with the soundhole mounted controls. I find that a battery tends to last several years, so the reduced access isn't a big deal.