My last three computers have been wireless. I change them every time I see some new and sexy. I've only have an interference problem with one of them and that only occurred a few times. Seems my computer showed that at one point in my ride (always the same spot) my max speed was 95 mph. Wow, that's a new land speed record.
I vote you get wireless. Just don't go cheap.
__________________
The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.