Thanks. Look at their mail below:
"For this purpose we offer "a la carte" SNP testing where you can choose from more than 10000 specific markers and/or you can narrow down the exact haplogroup with haplogroup specific panels. You can consider "panels" like a guided SNP testing sequence, where we help you to work out your haplogroup down to the most recent state of DNA research".
So if I know my J-L1189 branch would It be better to test all available sub-branches? Or gold cross and gold cone branches can be identified via Y-full / Whole Genome test?