I'm helping a buddy of mine to get his Pinbot tip-top and he's considering LEDs for the 'chest' lamps, the 5x5 grid of lights at the upper-center area of the playfield. The lamps are all 555s if it matters. I see there are single- and triple-LEDs available, can anyone suggest which ones to go with? We don't want them to overpower everything else, but I think extra bright could be really cool. Thoughts?