The one we liked best between the Vaquero and the X-Terra. Not reasons to not buy one or the other. I wasn't saying that battery life was a reason to buy one detector or another. Heck, if I used battery life as a criteria, I sure wouldn't have two XL Pros.
I made comparisons between the Cibola and X-30 as they are both fixed GB. I compared the Vaquero to the X-50 as they are both manual GB. Like I said, with weight, balance, depth of detection, sensitivity, separation being similar between the X-Terra and the Vaquero, I like the X-Terra much better. Not only does it offer a large, easy to read LCD, tone ID, faster sweep speed, easier pinpointing and notch discrimination. But also because I don't have to worry about a single 9-volt battery going dead in 8 - 10 hours. The 4 AA batteries last 36 - 44 hours in my X-Terras. And since you brought other detectors into the mix, for depth of detection, in my soil and the type of sites I hunt, the Advantage hunts as deep as my Vaquero, Cibola, X-Terra 30, X-Terra 50, MXT, Sovereign Elite or my Sovereign GT. It resets between targets faster than any of them too. The Advantage is the only detector I currently have without visual target ID. It is also the least expensive. If I were looking for the most depth of detection for my dollar, I'd go with the Advantage. Not quite as deep as my Explorer. But, alot easier on the shoulder and the pocketbook. Then again, that wasn't the question. HH Randy