Greenback wrote:Whatever you do, be careful if opening an automatic reel. That coil spring is a bitch to put back in the right place. Holy hell it sucks.
You'll only do it once… 
This is pure bullshit.
I think you should by the highest quality (read: most expensive) automatic reel you can find. Don't worry about affordability--spend even more money than you feel you can afford.
The reason I say this is because the quality of the spring steel goes up dramatically in the high priced autos. This is critical, given what I'm about to tell you.
The secret to achieving the results you desire is opening up said reel, shortening the spring by a full third, and then heat-tempering/oil quenching the spring. By doing so, you'll improve both the speed, strength, and durability of the spring.
After you've completed the tempering process, re-install the spring (trust me, it's a snap.)
You.
Are.
Welcome.