First, I will say that I only use putters with zero offset and I prefer the Bullseye style head. I’m currently using a Bullseye that I bought over 30 years ago.
As for SeeMore, I like the ones I’ve owned: the base model (FGP), a Nashville version of the base model (mFGP) which was made from carbon steel, and a Mini Giant. These putter heads are shaped like a Bullseye. At address they look like a black Bullseye with a thicker top line. The Rifle Scope Technology is very useful if you putt with the ball in the middle of your stance. SeeMore makes many different head shapes, with different materials, and with or without offset.
In terms of feel, I liked the feel of my mFGP the best. Yet, if I were ever to get the itch to replace my current putter, I would probably get a Mini Giant Deep Flange.