Spain trains: Talgo vs AVE ?

Hi -

I've been reading up on train travel in Spain, and I know that AVE trains
are a bit faster and more expensive than Talgo trains, but I'm having
difficulty finding information about any other differences, like comfort
level, for example.

I'm primarily interested in Tourist seats, not First Class.

Do any of you have opinions or pointers (URL)?

Thanks.

David -

Thanks very much for the reply. You were most helpful.

Cheers.

John