What is the GSview? Just a viewer for PLTs?
Actually, it's an EPS (Encapsulated PostScript) viewer. The PLT is just an extension really.
At the end of the day, a vast majority of these 'other' PDF programs are just front ends to the GhostScript engine, rarther like WinZip is a frontend to the opensource compression libraries.
Sure, they might add a pretty front end and a virtual printer port, but they just redirect the output to the GhostScript backend.
Remember, the PDF format is not owned by Adobe...they just put on a frontend and market it very well, but it's still an open standard file format.
I've used GS for several years now and it will typically out-perform (speed, file size and fidelity) any others I've tried, especially the baked in one in Acad.
I wrote a VBA batch printing program that used GS for it's PDF capabilities and all you have to do is pass the right command line arguments to the GS exe in your code and you can control everything.
I've also used the same approach in my C# batcher and you just start a process with the right arguments for GS and voila! You control everything as far
as your business rules are concerned (ie. file name of PDF, where to place it depending on current project for example etc.)
Cheers,
Glenn.