Sweet potatoes just need 10-12 mins in a microwave if you want convenience.
Sweet potatoes have a much higher glucose/fructose ratio, plus higher vitamin and mineral content. They have very powerful anti-inflammatory properties and higher fibre content too. Eat them with a shed load of saturated fat and protein to lower their GI to negligible.
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.