First of all, I didn't say 'they look more or less the same, so who cares' nor have I ever thought that. My reply was simply saying that I'm not against Arial and I like Helvetica (which I also use). I actually didn't start off this very old Arial Vs Helvetica debate, everyone is entitled to their opinion, no need to get offhand. I just came to answer the original poster's question - which I have now done and don't feel the need to dwell on any longer.
