I've finally decided on a Champion that I really enjoy playing and thought I'd share my build with everyone. I've read a lot of different guides and thought I'd add to the library of Kayle builds.
This build is a bit different as it's main focus is Attack Speed.
It's been pretty effective for me. I think Kayle is best used as a Hybrid, so that crazy attack speed gained by this build could allow for a lot higher kill/assist scores.

*Keep in mind this is my first guide/build and I'm only a level 15 Summoner, so this build is working great in unranked matches. Maybe someone can test it out in higher skill games.*

Open with Dagger, 1 Health Potion.
Grab Berserker's Greeves for attack/movement speed.
Pick up another Dagger or 2 to build a Stinger (Again, more attack speed).
Next go with the Recurve Bow (attack speed) and a Ruby Crystal to go towards an Ionic Spark (Probably the most farm-freindly item in the game).
Follow up with another Dagger and Brawlers Glove, than Zeal.
Than another Dagger and Cloak of Agiity to get Phantom Dancers.
Meki Pendant and Amplifyer Tome to finish the Nashor's Tooth.

Now that you're rolling with +180% Attack speed you can either go with more health/damage with a Frozen Mallet, or go with even more attack speed/ability power with Malady. Another option is get some Life Steal with The Blood Thirster.

Start off with Rightious Fury for range, Reckoning at level 2 for slow/damage and Divine Blessing at 3 for heal/support. Get Intervention at 6 and max last. Alternate stats in the remaining 3 skills. Reckoning gives the slow needed to immobilize, Rightious Fury gives the range (added with attack speed for big damage) and Divine Blessing helps with sustain/support.

Mostly attack speed runes all around.
Throw in some cooldown reduction and increased critical chance for added damage output.

Mostly Offensive, focusing on damage/attack speed.