i like it too, but it just doesn't seem vivid to me. like your favre sig below, its bright and grabs your attention and rightfully so. the color in your greg jones sig seems to be ... faded so to speak. the jaguar itself looks like you had a poster and put a jaguar sticker on it. perhaps that cuz you had to resize them i dunno.
plus I like a little bit of space in sigs. These don't have that much considering the large pictures of the jaguar and GJ. its hard with the limitations I know, but perhaps if you didnt make the Jaguar so front and center, it would add perceptual depth and space to your sig.
I'm not trying to be the guy thats like "it sucks". I'm just trying to give some constructive criticism. I too think they are good and that the 3rd is the best of the set
I always worry about when trying to give constructive critisism, coming on to hard perhaps or just the receiver taking it the wrong way