Got the Camp Chef because IFA had them on sale (I'm in Utah). Did not spring for the WiFi feature. Figured I could give the pellet thing a try at significantly lower investment than buying a Traeger. I am very happy with it but as mentioned above, it is not my first choice for grilling steaks. I have smoked turkeys in cold ambient temps and it worked great. Less than a year in so I can't comment on durability.
Lowes has the Weber Smokefire on clearance. Awesome cooker - I've had one over a year with no issues. The EX4 should be $250, EX6 prices range from $400-600 depending on location.
I've had a Camp Chef for a few years. It seems well made and turns out great tasting meat when it's working right. However on two occasions, I've had a problem with out of control heat. The temperature control dial was set on High Smoke, 170*, and when I checked on the smoker the temp was 300* and rising. One time shutting down and restarting seemed to work, the last time it didn't and I ended up finishing the pork but in the oven. After the first occurrence I noticed a lot of fine pellet dust in the smoker when I cleaned it. I haven't cleaned the smoker yet after the last occurrence but I'm wondering if that could have led to the problem.