Dx is an abbreviation for Diagnostics.

We'd like to see some versions of the designs with the X as a subscript, italicized or both or some variant on this theme

Dear CH,

I just wanted to say that I would like to tweak my submissions to your liking but without direct feedback I feel as though I'm flying blind. I understand that you may not know exactly what you want in a logo (and that you may have time constraints as it relates to leaving comments) but some form of direction would be greatly appreciated (i.e. "don't like the font, color, not all caps., etc...).

Thanks.

Hi All,
Just saw the comments about flying blind :)

Frankly, we are greatly impressed with the design quality and could happily choose any of the first 10-20 designs. We are ignoring small preferences like color, as we recognize this can easily be easily modified after the winning design is selected :)
In terms of fonts, we have gravitated to a clean, classic look (See the top 12 or so ranked designs for examples), we feel that caps or lowercase works equally well (From the ranking of both CAPs/No caps, we obviously can't decide) :)
Our small group does like the more graphical "x" of some of the designs, although we feel its important that it is still recognizable a a letter in its own right.
Based on our discussions (and review of the current submissions), we are looking for a simple graphic that has a unique impact. We feel that many of the variants on "Dx" fit this bill nicely. We also like #44, for its clear and direct presence :)

Dear CH,

You send private message please?

Thanks.

Thanks for the heads up.

Thanks to all of the designers....... Your artistry has far exceeded our expectations. We are a little behind on responding to all of the new designs. Please be assured that we will consider all submitted designs prior to making our final choice.
Once again, thanks for the professionalism and effort.
Regards,
Mat