I thought I could get away with just using my crosstrainers for spinning but I am quickly learning thats not going to work for me - I really feel it in my feet. I need a good spinning shoe (or stiff soled shoe). Any suggestions? I'm not looking to spend a lot - hopefully under $100. I know that the clip in shoes are recommended - I'm not sure that I need those...I'm tending more towards a spinning shoe that I can just use with the cages (though I do have the clip in option on my pedals). I've tried searching but I am new to spinning and all the options are overwhelming. Help???