Hi there,
#27 and #30 are still my favorites. I have not decided yet which of the two is better. I really like how much your drawing of the lamp resembles the actual lamp.
Having looked at different color combinations I think the colors that you have in
#27 and #30 (looks like dark grey and vibrant orange on my monitor) are best.
Could you do a version of
#27 and of #30 where both sides of the lamp are dark grey (instead of one side orange and one grey) with the R in the middle like you have it now.
Also could you put the lamp above the letters and put 'retropassion21' on a single line.
Thanks!