If you know hardware and confident doing little upgrade later, You can go for the one without ssd and later you can buy a ssd (something like a 128GB as price realy cheap nowdays) and transfer all from your HDD to the new SSD.
If you don't like those hasstle and just like to get on with it and after a year or to get another laptop sort of user than get the i5-3337U + 32GB SSD
My personal vote : i7-3537U + No SSD