How can i make my futon better?

My futon is what I use for my bed since I recently moved and dont have enough money for a bed. I have two problem. The first problem is that the futon kind of dips down a little bit in the middle, is there anything i can do to keep that from happening? Also, it squeeks a lot, is there any possible way to keep it from squeeking?

I don't know how to fix the squeaking, but you can put a large piece of plywood under the mattress to keep it from sinking in. I think it should be pretty cheap.

Are futons comfortable? what is the best filling to buy and where do YOU think the best futons are sold. Tha?

Definition of a futon: an uncomfortable couch that turns into an uncomfortable bed.

Regardless, a lot of people buy them and sleep on them. You can get the futon frame cheap and sometimes free at Craigslist. Generally speaking, the more expensive the mattress, the more comfortable it will be. Montgomery Ward's has a good selection of futon mattresses. You can compare features and prices using Bizrate.com.