No differences. Mineoro staff are scam-artist and all his products are snake-oil.
If your gold is really in those enormous cave, you need first to search for cave and after that for gold. This mean, that you need in your space arsenal GPR and/or suitable magnetometer.
There are some other solutions too, as par example to borrow this helicopter (instead of quadro-copter):
http://elkodaily.com/news/survey-hel...a4bcf887a.html
and then post here photos like this:
But maybe it is worth to try somewhat quickly get to the gold at this medieval method:
