Synephrine with phenypropanolamine worked great for me, although I had to discontinue it due to severe headaches. If you can handle the headaches, this combo is great.
SUCKMYMUSCLE
One product I've used that has synephrine is ProLab's Therma Pro Ephedra Free.
Is has 334 grams of Citrus Aurantium (Bitter Orange), which yields about 20 mg of synephirne, along with 200 mg caffeine, 75 mg of White Willow Bark, and 125 mg of Coleus Forskohlii (25 mg of Forskohlin).
I think ProLab modeled this after its original Therma Pro product (an herbal form of the ephedrine-caffeine-aspirin combo), replacing ephedrine with synephrine.