We use Adobe Acrobat Pro 7.0
The results are consistent, reliable, and file sizes have never been a problem. It prints everything as we expect, including background masks and white hatches.
The driver it makes available in Autocad allows publish to plot to one multi-page pdf, or seperate files, but in either situation, you can just select all the files you want in Windows Explorer, right click and select "Combine in Adobe Acrobat" to put them all in one multi-page file, that you can put in whatever order you want before it creates it, so no worrying about selecting the files in the right order or anything.
It has a "reduce file size" function, which, depending on content I have seen reduce anywhere from (-)5% to about 90%... yes that was negative 5%
I've only seen it 2-3 times, but it still makes me laugh when "reduce file size" somehow makes it bigger. Other times though I've seen it go from 5mb to 50kb. Very nice for when you're emailing the full size sheets for whatever reason.
It can also take a multi-page pdf and extract sheets (all or only those selected in the dialog) so you can go either way with it.
I think the price is what sets people off, but I personally like the peace of mind that my pdf creator is universal for all my programs, has no obvious flaws, and is reliable, stable, and requires no tech support. This is the only program I've never had to go online searching for answers to questions or problems. I've never HAD any problems with it from the moment I put the cd in, until now. I can't say the same for any piece of software I regularly use on this computer... (aside from MS Paint, Notepad, and Solitaire of course
)