i really like 2, 3 & 5 the best. if you created those elements urself - well done! if u just arranged them urself, very cool compositions! keep up the good work.
Logo #1: I like the design of 'S', if you can make it like its partly shining is much better similar to that logo #2. Logo # 6 - I like this very simple logo by Text. #7 - I like the way you made the 'S, actually the overall look is good, Just try another color combinations to match it with the product-steel. #8 - this one is cool too.
Well done. I really like how you did these. I like the blue color used the best. Number 3 looks to be my fav.
Some nice work there. My preference would be No 1 but as gentri80y mentioned, I too would like to see the S in the colouring of the circular ring in the No. 2 logo. I think that this would work really well.
My favorite is a combination: Logo no. 2 with typeface 3, but the last line steel a bit more prominent. Eventually a little touch of the clean freshness of no. 4 would work well?