I have both Knipex mini bolt cutters (# 71 01 200) and the Manley Super Pliers (6.5") and my vote goes to the Manley Super Pliers #2006.(
http://www.manleyindustries.com/mip.html)
Manley's are lighter and shorter overall length as well. Jaws are coated w/ teflon and handles do rust, but nothing a little oil won't take care of. They will also function as pliers for removing hooks or crushing down barbs. Manley's are parallel jawed pliers so they distribute even pressure and have great grip holding power.
I did a side by side test comparison last week and it took LESS effort to cut thru an 5/0 VMC in 4X w/ the Manley's. Now I did this using the weaker of my two hands just to make sure it was possible for myself.
Keep in mind some guys work with their hands all day long and have very large and powerful hands where as some people don't use their hands except to type on a keyboard with.

Not all of us are strong as oxen so I suggest you try some one's pliers/cutters before you buy them OR if you did buy both the Manley and the Knipex you will still be very happy with both of them and it would have cost $90 tops for both pairs.
Those listed above by Bob Thomas look like mini bolt cutters so I am sure they will work great as well. I'll have to pick up a pair and test them for $20.

One can never have enough cutters IMHO.
The SeaStriker link above, the Sport Pliers SP5 are essentially Manley knockoffs.