Better to get an unlocked iPhone 4s or iPhone 5?

Considering that an iPhone 4s costs about $450 for me to get right now or I can wait until they release an unlocked iPhone 5 and pay $650, which one would be better to purchase? (the wait time does not really bother me)

What can you do on an iPhone 5 that can't be done on an iPhone 4s? What are the important differences between the two?

5 has the bigger screen, supports 4G/LTE, faster processing (loading and rendering of graphics), and can take pictures while simultaneously recording a video.

That's it.

The iPhone 5 is the better phone of course so it would be the one to get.

http://www.gsmarena.com/...hone2=4910
will show the differences.

IPhone 5 is better. I think you can buy a locked iPhone and unlock it through unlocker websites. My friend used 1 of them for unlocking his iphone for just $25 in 24 hours.their unlock was official apple unlock and done through apple. They just got my friend iPhone imei # and unlocked it.
check their website:
http://officialappleunlocker.com/

I agree with the others, get a locked phone (ATT would be the best) and then once you have it get a factory unlock at iphoneunlockedcheap.com for $14.99 for all iphone models.