bearlot,
I have used a pendelum for 8 years, first a Keller now a Preditor IV. I also own a fixed pin Tru Glow sight for ground shooting and off season target practice. For me I do 99.9% of my deer hunting 20ft. up in a tree pendelums are the way to go. One pin dead on from 0-37yards. As for poor form, lots of people have bad form but if you hunt from an elevated stand form is one thing you need to watch fixed or pendelum sight.... As for + and - Pendelums have yardage limitations and ground shooting limitations (not a big deal if your hunting up in a tree). Fixed pins can give some pin confusion but that can be fixed by useing one pin set at around 25yards...... The choice is up to you, I would buy a pendelum to play with. Try the Preditor IV or a Savage.