Why not go and pick exactly the types of strawberries that you want? You can pick whatever ripeness you require at the time and even pick a few lots that are the same ripeness and can be stored together till ready to use.
I find this a great idea and far better than buying them already packed when you seem to always get some that are over ripe and often even soggy with mould on them. If you pick your own, they are as fresh as possible and will of course, last longer and hopefully be sweeter and nicer. A good idea is to bring along an Esky, so you can store them, especially if it is a hot day as they will keep longer if stored initially in the Esky.