Since I'm in a good mood today, I will share with you some pro advices:
For "level 27" sets, I choose to push to level 28 because of the great advantage of double-blue watch.
You can switch this by using level 27's zappy and then stay on a level 27 build - offering you one additional turn against lvl 28's opponent.
By the way, this built is designed for slaying noobs and make money:
Now the pro-built version. This one works perfectly using blue & red resistance kits, giving you blue & red resistance 34 red & 38 blue - that means 10 damages taken max by attack with a shield.