Mat, get the harder one. I've got the #1 and #2. The #1 is easy, the #2 not so. I can push out about 20 reps with the #1, so it's more an endurance workout. The #2 I can manage about #5 reps with the right hand and a couple with the left. I'm considering getting one of their resistance increasers to make the #1 harder. The other thing I wish is that you could get ones with different spring windings. The way the springs are wound make them not sit quite the same in each hand. It's not a big issue, but at times I think it makes it a bit easier for the right hand.
"If trolling is an art then I am your yoda.if spelling counts, go elsewhere.........." - BL
"I don't do much cardio." - Ironfist
"Grip training is everything. I say this with CoC in hand." - abobo