I've got a pair of Guides that I've had for a year. For the most part I like them quite a bit. I find the 200g of insulation is great for cool days when I'm doing a lot of moving and stopping, as well as for down right cold if I'm moving. My feet have gotten cold in the dead of winter while sitting and calling for coyotes, but everyone is different in that regard (a 600g would likely be better for that purpose when it's single digits outside). They have one of the more flexible soles of the boots I own... which makes them ultra comfortable to walk in on good terrain, but potentially less stable on steep rocky hillsides. I do like the height for a colder weather boot and they support the ankle well. So far, they've held up great and have kept my feet dry.
Fit is by far the most important thing though... if they dont fit you right none of the reviews really matter. I've got a narrow and lower volume foot, and with some green Superfeet and a thicker sock these do well for me.
Anything specific you want to know about them?