qicpic,
Well ... best machine for dry sand and the land is pretty broad. Don't know if there are price limitations either, but that aside, I'll give you my opinion on some of what I use for beach and land work in fairly mild soil conditions.
If you don't mind digging a lot of foil in hopes of some gold and like relics as well as coins, then I'd lean towards a Tejon. I use mostly two coils on the Tejon; the cleansweep and the 5.75 inch concentric. Third coil by use is the standard 9 x8 concentric. Depends on where I am hunting and the trash conditions. The Tejon has been one of the best gold finders I've used; but a lot of trash gets dug too!
I've got a beach trip coming up in a couple of weeks and plan to pack the Tejon with the 3.6 x 18 inch cleansweep for the dry sand, the CZ6a for wetsand and the dry to wet transition / blanket line area, and a PI detector for the water and some wet sand detecting. Can work the Tejon a little into transition area. Can even use it over the wet saltwater sand, but with a pretty significant depth loss once things get wet and the salt is the largest conductive target the coil sees.
If your main interest is hunting coins or your goal is to minimize trash digging, including foil, I'd look for a multi-tone / target ID detector.
tvr