What are the advantages? Is there extra 50$ worth it?
it is up to you. 3G you can play turn based games at anytime. as long as you pay for 3G. also you have GPS as the wifi only model does not. you do not need to pay for the 3G to use the wifi on the 3G model. also right now the 3G model gets a free 8GB memory card.
Want a option to buy avatar's on the ps vita's psn store. Then vote on the link by copying it to your web browser.