Look up TriggerTech. They are about as simple as it gets and you cant "over adjust" the pull weight. There is only one adjustment and even if you back that screw all the way out it wont go off by accident.
Right out of the box you wont find a trigger in this price range with almost no creep or over travel.
http://www.brownells.com/rifle-parts..._1=TRIGGERTECH
- Frictionless Release Technology (FRT™)
- Single Stage Zero Creep release
- Adjustable from 1.5-4 lb
- Safety Integrated with bolt release
- Stainless Steel Parts
- Lubrication Free
- Stainless Steel Components
- Aluminum, T7075, anodized black housings