Digital piano 32 64 128 Note polyphony comparison?

I need to know what songs each type of piano can play well without cutting the sound I am leaning toward 32 because its cheapest and because i am still learning but i want to know what type of music I wont be able to play. see these videos please and tell me if i can play them on a 32 note piano or will i need to... show more I need to know what songs each type of piano can play well without cutting the sound
I am leaning toward 32 because its cheapest and because i am still learning but i want to know what type of music I wont be able to play. see these videos please and tell me if i can play them on a 32 note piano or will i need to get a higher type and tell me if you know any song or music piece(Classic Or Modern) you know that wont play on a 32
And i know you can play any thing you want if you play it on a slower tempo but i mean the actual song, The original not some slow version of it

http://www.youtube.com/watch?v=kLL3S8xqU60
http://www.youtube.com/watch?v=sraGL5wDl8g
http://www.youtube.com/watch?v=-neZL4_O6sQ
http://www.youtube.com/watch?v=LjyviatSeCY
Update: Sorry about the tempo thing but i mean if you play 32 notes in one second is not like playing 32 notes in 10 seconds...its a slower tempo right? same song but a little slower.
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