Well Raven. I'm confused by your question.
"Still wondering about my SCSI question above. What's the recommended card to get to be able to work my Laserwriter Select 360? "
If you don't need a SCSI Card for anything then don't bother.
Your old card will probably work under OS 9.x in the newer machine.
OS X I'm not so sure.
There are plenty of Scanners that will work. USB probably.
If you want a trackball it should work fine.
I really can't say everything you might want.
You can always get things in the future. it's not all or nothing.
Do you have a firm lead on a machine?