If you can't sonically hear a difference between the three, then pick the one with the least expensive price.
(Make sure that all three will work with your electronics though. Nothing worse than taking home a speaker and finding out that your amp is not up to the task of driving your new speakers! In fact, I recommend you bring your amp with you and listen to all three again. And your CD player, if your can handle bringing in two pieces of equipment. This will give you a very good idea of what the final sound at your house will sound like.)
My two cents worth. Good Luck!
(Make sure that all three will work with your electronics though. Nothing worse than taking home a speaker and finding out that your amp is not up to the task of driving your new speakers! In fact, I recommend you bring your amp with you and listen to all three again. And your CD player, if your can handle bringing in two pieces of equipment. This will give you a very good idea of what the final sound at your house will sound like.)
My two cents worth. Good Luck!