I like #43, based upon my latest comment. 42 a bit less so. The others feel too much like a Target and reads to me more like a C. I don't think those say 'enough'. I will rank 42/43.
I'd be curious if the eg could survive without a circle. in those 2. They would need to be strong.
Here is the new press release we crafted about campaign... You will note the corporate logo which will not change.