How big is your griff? Everything I see is intermediate Ruffland, medium Dakota, and I'm not sure if it's medium or intermediate on the Gunner. I would guess medium on a Lucky Duck.
I have a 10 month old griffon that I'm expecting to be about 60ish pounds. He's long legged. I bought him a Dakota in medium. He has room in it but I got a thick bed so it swallows up some of that room. I had some gift cards so it ended up being about 150 to me. My brother has a griffon a month younger and he's thinking of getting the low profile Dakota so his dog has less room so he doesn't pee jn it. But everything is sold out right now.
I drive a crv and it fits in the backseat with the backdoor all the way open. It's a tight fit getting it through the door but I have the angle down now to get it in or more so the height I have to lift it to to slide it in the door. It doesn't face forward on the seat but across the seat and takes up 2 seats. A seat and a half in the backseat of my work truck. It can be awkward to carry sometimes but I use the airholes on the side to lift sometimes, depending on where I'm going with it. It's big externally. But I like it.
Having seen the Ruffland in stores(its the only crate you can see in a store out of the hunting crates) there's definitely a better quality to the Dakota. I could see setting something to heavy on the Ruffland and blowing a seam. Probably nitpicking because you're not going to be stacking stuff on it but I don't like the seams of the Ruffland. The Dakota sits next to my car in the garage and I'm always setting something on it for a second. It's well-made. I would have loved to buy a gunner but that 8 hundo is spendy.