To my knowledge, the SE and earlier were all through hold.

As for their use, these are wonderful machines. They have bright, high contrast displays. Most of them are silent, which makes them good writing machines IMHO. They work with System 6 and most of the expected peripherals, which means that you can do a fair bit with them. And there is a great selection of fantastic software for them.

I'd love to have one, but I'm trying to keep my collection to a minimum these days. And I've choosen the 68000 based Amigas and a 386.