MONTREAL — Cellphone users are bombarded with the buzz words "fastest" and "most reliable" when it comes to wireless networks.

So who really has Canada's fastest wireless service?

Is it Rogers, Bell or Telus?

The fact is, technology watchers say consumers will have a hard time telling the difference, despite the claims each network makes.

Technology analyst Duncan Stewart says broadly speaking, you'll get the same speed on each network in dense urban areas like Vancouver, Edmonton or Toronto.

Nevertheless the competition over who's the fastest is spilling into the courtrooms.

Telus is suing Rogers to try to force its competitor to abandon its claim to having Canada's fastest and most reliable network.

But P-C Magazine's Sascha Segan says these kinds of claims are almost impossible to prove because there are so many ways to define most reliable.