Ah, we get discounts for signing contracts here in the US as well, but all the main carriers in the US now offer discounts for not signing a contract (for example I'm saving $30 a month on my plan because both phones are off-contract) or roughly 25% off the bill.
If it costs the same though, and you won't want to upgrade for a while, then you may just want to get the Note 4 on contract.
I might also suggest if you look at tablets to look into Windows tablets. I'm not sure what kind of anime files you play but I have an ASUS Transformer Book T100 that can play 1080p 10 bit FLAC Blu-ray rips while none of my other mobile devices (Oneplus One, iPad 3, Nexus 7) can. The display is the standard 1336*768 but it's IPS and on a 10" screen it really isn't bad at all.