Low GI is the way to go.
There's a huge metabolic advantage of glucose over frucotse.
Most low-carbers have to obtain the bulk of their carbs from fructose in order to obtain adequate nutrition from vegetables. That ratio is even worse if they chose to eat much fruit.
F 5 ft 3. HW: 196 lbs. Primal SW (May 2011): 182 lbs (42% BF)... W June '12: 160 lbs (29% BF) (UK size 12, US size 8). GW: ~24% BF - have ditched the scales til I fit into a pair of UK size 10 bootcut jeans. Currently aligning towards 'The Perfect Health Diet' having swapped some fat for potatoes.