I think I am going to get a quartz nail instead of titanium...the thought of inhaling off of titanium concerns me and quartz seems better for my mind. is there difference in quartz quality? i see cheap $20 nails all the way up to $150 quartz nails. I also read some quartz might actually be boro and not quartz. does any of this matter? will "cheap" quartz give off anything? or are all my concerns happening at way higher temperatures that ill be using? thanks!