I'm going to buy the SE300B and CK93 module. I'm wondering if I can use this combo for exterior sound. How does the CK93 compare to the CK98? Are there any sound files I can download to compare the two in exterior situations? I'd like to avoid spending the extra $$ on the CK98 if at all possible, so I'd like to hear your recommendations. If I can get away with the CK93 for exterior sound, which size k-zepp will fit the CK93? Thanks much.