The Brunton 15TDCL basically is a Silva Ranger. Silva bought Brunton some time ago. Some items are marketed under the Silva brand (although not necessarily in Sweden) and others under the Brunton brand (although not necessarily in the USA). There may be some divergence, but both are bascially Silva Rangers. The 15TDCL has a good reputation. My Silva Ranger purchased in the 70's is still going strong.
Don't get lost in the trademark name.
Silva of Sweden - the original clear plastic baseplate compass company - does not own the "Silva" U.S. trademark; therefore, they cannot sell their compasses in the U.S. under their original name.
Instead, in the U.S. they sell their compasses under the Brunton and Nexus labels.
Johnson Outdoors owns the "Silva" U.S. Trademark, and sells "Silva" compasses in the U.S. I'm not sure who makes them, but it is NOT Silva of Sweden.
Prior to 1996 the compasses solds as "Silva" were indeed made by Silva of Sweden, but not since then.
That's kind of like saying that McDonalds can't sell their burgers using the word "McDonalds" in Europe. OK, maybe a bad analogy.