My sister just recently moved down from Michigan to live with me here in sunny Florida. She decided to just get a new bed once she got here instead of lugging one along for the 20+ hour drive. My sister knew she wanted a bed frame from Ikea so she just decided to get her mattress from there as well. We spent about a half hour bouncing and laying down on the different mattresses, trying to find the best one in her price range. She finally decided on the queen size Sultan Hogbo.
The Sultan Hogbo features bonnell springs that provide excellent comfort. According to their website the spring construction allows air to flow through the mattress evenly so it stays just as fresh as the day you bought it. The mattress is also reversible so my sister can use both sides so it gets worn in evenly.
My sister also bought an extra mattress pad to go on top for added comfort and squishiness. She says the mattress is very comfortable and I thought it was very comfortable too when I laid on it. It was for a great price at $199. Also with the type of bed she got she only needed the mattress, not a box spring so she saved some extra money there as well.
If you are in need of a new mattress, try checking Ikea out! You just might be pleasently surprised with what you find.