I prefer rulons, because their weapons are cooler, they have nice helmets, and many of them have a trap !
Deinonychus (rulon) > Deinonychus (valorian)
Monoclonius (rulon) > Styracosaurus (valorian)
Quetzacoaltus (rulon) > Quetzacoaltus (valorian)
etc.
The good...10 points for
Triceratops in my opinion it's nearly perfect (nice walking, perfect helmet, nice weapons). The back is a little empty though.
8 points for
Saurolophus I love the way it stands, and the feeling of its skin is nice. The trap is great (the best one in the toyline) ! The helmet doesn't keep in place, it's the main problem I have with it.
7 points for
Kentrosaurus I love the design, heavyly armorded, and the art of the box is amazing.
6 points for
Monoclonius one of the best "little" dinorider ! I have to admit that I felt in love with it ! Weaponry, cool rider, playability, and it does have a trap.
5 points for
Tyrannosaurus Rex Motorized, heavyly armored, great design... but not very playable. Really great toy, but a little to big to be my favorite.
4 points for
Dimetrodon Very nice toy, the gimmick that makes the mouth move is really nice
3 points for
Styracosaurus (I owned it as a kid and loved it, but I have to admit that monoclonius is far better)
2 points for
Edmontonia the gimmicks are cool ! And the dino, too. But I don't like its "shell", looking like an umbrella...
1 point for
Struthiominus nice design overall =)
...the bad.10 points for
Pterodactyl The dino is weak, so is the rest of this toy. My bro owned this one and I had the ankylosaurus for the same price... what a piece of cr#p !
8 points for
Deinonychus (valorian) The dino is really great (I love the way it can "run" or "attack" with its legs) but it's a shame how weak this toy is compared to the rulon version.
7 points for
Stegosaurus The dino is great, but its "two half nut shell" is weird... with poor designed missiles on it...

6 points for
Quetzalcoatlus (wave 3) because the dino is really great, superb color but... it can't be posed anyhow, because the rider is UNDER the dino...
5 point for
Chasmosaurus because weaponry (with a poor "futuristic design") is ugly, but I have to admit that the dino is really cool (new head sculpt and color)
4 points for
Pachyrhinosaurus for the same reason as above.