In tecra9000 series some new glue was used (and distributed at least in europe) that caused the entire laptop to fall apart.
That wasn't very sturdy.
The previous models seem to have been very good.
I have a satellite pro 6100, which is good. But if you're referring to sturdy as in 'won't break if it accidentally falls' then sp/s isn't a good choice.
I don't know about the M1 model or anything newer than the t9000 since it's the latest model our company got (and probably won't get another because of the bad experience with it).
And b t w, this is considered double posting.
http://www.techimo.com/forum/showthr...threadid=60070
-M