I can appreciate you sitting on the fence Jim....there is a lot of information out there, to sift through, digest and apply to your own hunting characteristics. And the knobs aren't an issue to you because of your hunting preferences. Also I try make it a point of not putting down Fishers, Tesoros, Minelabs etc. This is a Garrett forum, so I try to speak mostly about Garretts. However, those knobs do get stuck and wear out in sub zero temperatures as experienced in the past, and a lot of people do go metal detecting in sub zero temperatures, and join others who choose to go out in those temperatures to ski, snowshoe, hike, skate, play hockey etc. Not everyone wants to stay cooped up indoors for a lengthy time. It's all about choices. If knobs work great for you, not a problem, however, there are issues with them where I live.
If you think Garrett's technology is finally catching up, well kudos to Garrett. Everybody wins!
There has been an incredible amount of information posted about the AT Pro. Some fact, some not so fact and some posted by individuals with bias and an invested interest to do so. In most cases, It becomes quite obvious as to which those posters are. And, this happens each time a new metal detector is released, be it from Garrett, Fisher, Minelab Tesoro etc. And add to that some had some issues when they received their AT Pro. However, they were promptly repaired, returned as has been the excellent customer service & warranty policy of Garrett as far back as I can remember. It's a done deal. How many were faulty? Only Garrett knows, and what's important is that Garrett repaired them. Some people just won't let this issue go....... I could fill up pages about about all the complaints, manufacturer issues, manufacturers quality control issues and the many warts that other makes too possess, but as previously mentioned, I prefer to only discuss Garrett's brands. And going to their forums to spread discontent is just not my cup of tea. If you are considering buying an AT pro and are worried about it's performance just ask the dealer to try it out before he sends it to you.
And, as I have suggested to many others, go to the various forums, read the posts, read between the lines, ask lots of questions and look at the types of targets being found. Let your wallet and gut feeling be your guide.
Good luck with whatever metal detector you choose Jim. Put in the time, learn it to the point where you can tell it what is under the coil, not the other way around, then you will have the
BEST metal detector that's available.
John