Thanks all, for the responses!
She's a teacher, and a novice wanting to get into cycling, so she's not wanting a high-order trainer. She's looking for a stand-alone machine, like something you'd find in fitness center. I can direct her to Armstrong's machine. I believe it varies difficulty...even incline angle? I have to check it out, myself, but that's the general idea.
Personally, I'd like to check out the CycleOps PowerBeam you mentioned, Austin Skater. Very intriguing.
Shelley, some time ago I read reviews about the different types of trainers. Is heat an issue with fluid trainers? Just wondering. Even when I was on uprights, I tended to workout on Kreitler Rollers.
Still looking for more responses. Keep 'em coming! I'm learning, too!