Opinion question...
What are some of the more popular LCD modules out there, graphic or text mode based? Ya know, something that probably won't be discontinued in the next month or next year or so.

I'm planning on making a dozen or so serial display/keypad modules to interface with PIC projects and would like to standardize the mounting holes for the whole module to fit the case correctly....not only now, but say next year, or the year after, when I want to build a few more.

I've got 4 types of modules on hand at the moment: 2 graphic types (1 SED1520 based 122x32 from lcdmodkit, 1 G1213 based from mouser), 2 text based (1 16x2 from mouser, 1 20x4 from a surplus). Of course they all mount differently. I prefer the graphics based over the text based. But like it always seems to happen, if I wanted to build another batch of the same thing next year, is the company that makes them going to be in business? Is the same module going to be available for purchase?

Is there any sort of standard mounting format for any of these modules or is it always going to be hit-or-miss.
JDG