I had a traeger for a little while...didn't like the flavor...sold it. I had a BGE large for a while...it cooked fine, but in my opinion not any better than my weber kettle, and if I wanted low and slow I used my stickburner or WSM because capacity was limited on the BGE...sold it. So how does this help you? I don't know. I'd say buy a 22.5" WSM for low and slow, and a 22.5 OTG for searing steaks and grilling. You can buy a lot of meat if you've only spent $550 for the WSM and OTG compared to the cost of a BGE and Traeger.
Team: Smitty's Real Pit BBQ
Superior SS-3 - Courtesy of Gainesville Jaycees and Superior Smokers
2 Custom Built Reverse Flow Stickburners
Weber 18.5" & 22.5" WSM
Weber 26.75" OTG & 22.5" OTS
Weber Blue 2000 Stainless Performer