Both can sound great provided you play in key.
Originally Posted by Guitarnewb101
However, the fact that the pentatonic scale has 2 notes fewer can make it a bit more monotonous. Also, the pentatonic scale doesn't have a 7th note which (like a 3rd) can build tension by transitioning to a minor feel when flattened. But this can also let you easily shift your solo from a minor to a major feel over the same chords adding a bluesy touch to it.
A particular example that comes to my mind is the solo on "We All Die Young" by Steel Dragon. Zakk Wylde plays a brilliant solo on this track that reflects his style which is both melodic and aggressive.
-- My current rig
Guitar: '98 MIJ Ibanez RG520 QS w EMG 81/60
Amp: Laney LC15R Tube, Fernandes 20W SS
Pedals: MI Audio Tube Zone Overdrive, Boss OD3, CS3, MT2, HM2, DS2, CE5, DD7, TU3, Beta Aivin DD2 Delay, Dunlop Crybaby 95Q, Stranger Vol Pedal, BBE SupaCharger
Others: Yamaha RBX 374 Bass, Yamaha MM-6 Synth, M-Audio Fast Track, Shure SM-57, Heet Sound E-Bow Plus
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