I don't know that those 2 will be all that similar. For one thing, they're built for different purposes; the Porta-pros are obviously meant to be portable, while the Alessandros are more for home use. Also, the Porta-Pros tend to be fun and have a mid-bass hump, which I guess is good to get you pumped up for exercise and such, while the Alessandros tend towards a Grado sound (from what I've heard), and will probably emphasize treble a bit more. I don't know that either will be particularly good with movies, but for anything more specific you'll have to read some reviews and comparisons. That being said, I've never really seen any direct comparisons, given that they're in different price brackets and categories of headphone. Maybe look at ljokerl's portables review thread, which I think includes both headphones.
so what would be better to play movie soundtracks?
I think having something with a wide sound stage would help? am i correct?
what about the out of head experience?
is there any headphones which do well in this area?
and btw i cant state my price range because i am not from the US. maybe you guys can just suggest me a few headphones and i will check them out