I really like the first one. The two aspects that make it stand out for me were that you captured the way fender decals "float" just above the woodgrain in the clear coat, and the way the strings going out of focus give a visual cue similar to them vibrating (even though they don't on the head).
On the second one, I would have like to see you shift your POV plane around a bit so that one of the screwheads, or something was in focus as well as the pot knob. I still like it though.