I am going to be putting a hunting rifle together with a McMillan Classic stock. I am thinking of using a Hinged Floor Plate, but I am not able to put my eyes or hands on the different floor plates that I am leaning towards.

I am looking at these:

Hawkins Precision
Sunny Hill
Williams
Badger M4

Please tell me any pros and cons with any of these. Pictures would also be a big help if you have any. I would like to know about fit, function, quality, and ease of operation, as well as potential problems.

I am having to go off of internet advice alone, so your help is greatly appreciated!