One of the two quivers I've been contemplating for the 68" longbow I built are the Eagle's Flight MiniMAX 4 arrow. It attaches with rubber padded velcro, has decent reviews on 3Rivers, and is under $60. They also make a 3 arrow version. Only 5 ounces in weight.
The other is the Thunderhorn Boa 6 arrow. This one has great reviews also, holds two more arrows, attaches with a rubber strap instead of velcro, but only comes in black and has a plastic hood. Weighs 9 ounces.
I've read great reviews on higher end Thunderhorns and Great Northerns, but really have no desire to spend upwards of $90 on a quiver for a bow that cost less than that for materials. But if there are others in that price range I might not have heard of yet, I'd be open to look at those too. I'm hoping to get some opinions or thoughts on materials and attachment methods that might sway my decision. Based on what I can read in the reviews, performance alone seems like a coin flip.