Bitcoin is better name. We have experience in naming and Bitcoin really describe the goal of it.
For sure if Netcoin was really the name of Bitcoin, people will also love it and say it is a better name.
If it was Netcoin, the "net" is came from Internet word for sure which that make sense also if Netcoin was successfully really the name instead of Bitcoin, Bitcoin, "bit" is more likely technical.
Overall, Bitcoin and Netcoin for me are all good.