In DPPt, I always went with Shinx. The Shinx line is nice to have throughout the game and the design is overall cool, too. Plus, Shinx is available early on and that's always been a plus for me.
As for HGSS, I didn't go with any electric type. You have to jump through extra hoops or wait until Safari Zone to get a decent one. Ampharos was okay, but just not my style. I just went without Electric types.