Can't help as I've never heard the Burmeister, or the copper Bolder, but the higher level Bolder is very nice.
The ChrisVH Pulsar will be about that price or maybe a little more and is a VERY good digital cable that comes with a 60 day money back period.
I recommend the WBT copper (gold) Nextgen connectors. If you want more of a silver sound, just put some silclear on them.