referring to the 'proper' SIZE and 'proper' TYPE coils to best handle challenges at a site with varying amounts of trash, dense brush, building rubble, etc.
Using the chart you linked to, such a coil for most of the dense trash sites I like to hunt is not available for the Land Ranger Pro and Quick Draw Pro or Lone Star Pro. Those three new models use the Teknetics Greek series coils BUT have only a push-on connector and not a screw-on. So you're limited to the round 8" Concentric which I like best of the three; the 5½x9¾ elliptical Concentric [size=small](they call 10" Concentric)[/size] which I like almost as much as the 8" round coil; and the 11+" Elliptical BiAxial [size=small](Double-D)[/size] which I really don't care for at all for my needs.
While I am not a regular big fan of DD coils for my hunting needs, there are only a couple that I DO like. Those are the round sub 5" DD for my Omega use in dense trash, and, if I am going to do general hunting with a DD coil, I do like the 5X10 elliptical DD coil. My 5" DD coil is always ready for action, but these two DD's are not part of the push-on connector coils made for the Bounty Hunter 'Pro' models. Thus, for ME, I can't get my favorite, aka 'proper,' coil size in the sub-5" DD for the Land Ranger Pro and new BH 'Pro' family.
Honestly, I think that these are interesting releases for the very popular [size=small](meaning wide-spread, not most sought-after by avid detectorists)[/size] Bounty Hunter product line, but I feel they should have done a few things differently. One, they are engineered from the Tek. family of detectors and use Teknetics-compatible coils [size=small](except for the connectors)[/size]. They use a different level of features and in-the-field performance than most of the BH line. And third, they are marketed in the same low-baller pricing like the BH line instead of holding an MSRP or MAP price like the Fisher and Teknetics brands.
I would have set these three 'Pro' models apart for the rest of the BH line and made them more-or-less elite models from Bounty Hunter.
I would have used screw-on connectors, and that would have made them compatible with ALL of the screw-on Teknetics Greek series search coils.
I would have been more restrictive in how they were marketed so as to hold a better value on them, like other brands do. By doing the mass-market, make-what-you-can method, I think they then de-value the product. This low-discount pricing makes them appear to be cheap and inferior, which is how many people view the entire Bounty Hunter line. I would have limited the suggested retail to the MSRP or a MAP price. That would have encouraged more savvy dealers who are real detector users to stock, own and use these models instead of them being funneled through big discount chains and sold by clerks who haven't a clue how to help their customers. Add more of a quality 'feeling' to Bounty Hunter.
Personally, I would like to have a Land Ranger Pro in my arsenal that had a screw-on connector and could use my 5" DD and 5X10 DD and 8" Concentric coils. Not one of the more limited coil compatible units they push out the shipping door.
Then I could match the 'proper' search coil to the trashier sites I get out to hunt.
I took my dog Rikki and made a 'dawn patrol' out into the country this morning to locate three old school sites. One is a bunch of dense brush and two of them are a mix of brush and a lot of post-harvest stubble. Not friendly locations to try and work a big coil with a lot of openings to snag on the stubble, sage brush and stiff brushy growth. Good places to use an 8" Concentric, but especially hit the brushier and iron littered parts with a little 5" DD and go slow. That coil isn't available for the LRP. Sad.
Just my opinions.
Monte