DT Controls Ltd.Logo Design Contest

I like the symbol in the first two. All around it comes across a little flat. Could make it pop more?

Give 6 more depth if you can. Thank you.

thanks d-man for u comment
and this comment reference entry #101, #102

i hope u like it

regards
green

I like the darker color in 101. But a gauge symbol needs to be incorperated. Number 6 has potential to with more work, make it stand out more if you can and give some reflection off DT Controls. Possibly off the symbol as well. Thank you.