I have been keeping an eye out for a decent Synergy 2 to buy for colder weather. Havent been looking too long but it seems that it would be easier to pick up a SCX2 RI for similar or cheaper price. What is difference between the two? How is the RI in cold weather (say 40-50 degrees)? Any big difference in performance? Im sure the Syn 2 out does the Syn 1 RI in durability from what I've been reading. Just need some opinions. Thanks.