Is it worth the cost to have it upgraded to version 6 and does it really help ? I have a chance to go relic hunting and have read about how well the omega is at relic hunting but I have the version 4 , Its not real chatty but that's here in my Texas soil I hear out east the soil is more mineralized and I really want to have a chance the only other machine I have a Troy Shadow X3 to take but it has fixed ground balance Thanks for any replys