my first hammock was also an eno DN. but being 6'4" i couldn't really get flat in it. my next one was the $20 woot hammock. the extra 1.5' made a huge difference. i was able to really get some good sleep in it. recently i just got a lite owl and boy is it comfy.
one thing i noticed about the eno and woot hammocks is there is a 8" strip sewn down the length of both sides. when you lay in them it it cuts into the width of the hammock. the lite owl doesn't have that sewn in strip so it makes it feel wider and more comfortable. the downfall to that is that i liked to fold that strip over and use it as a pillow, but i'll take the extra usable width over the pillow.
edit: i took a closer look at Cannibal's image and i love the ring buckle setup on 2 of them, but i can't make out what the middle one is. is it a cinch buckle?