As twin followups to last year's impressive Surge waterproof earphones, H2O Audio's new Surge Sportwrap ($60) and Surge Pro ($100) offer different spins on the earlier theme. Both are packed with numerous rubber and new foam eartips to help the earbuds get a comfortable seal with your ears; Sportwrap has an integrated headband designed to support the original Surge's dynamic driver earbuds on your head for running, surfing, and other applications,…