Quick, what are the latest BB recs for mattresses?

[sweet_pea]

We have to buy a new crib mattress for DD since the one we have (and was bought by grandma) is holding up awfully. It's come to the point where we have to replace it pretty much immediately. She's 2.5 but hopefully the crib will be converted to a toddler bed so she will still be spending at least a year in that bed.

Could someone tell me what the latest Baby Bargains book recs for mattresses are? I want to look at both spring mattresses and foam before deciding.

Or, if you have another mattress that you love (or know of one I should stay away from), let me know. I really want to buy a high quality mattress this time to make sure it holds up.

Thanks so much in advance!