telus vs. koodo vs. bell mobility??

Best to just look at the plans available to you, investigate into hidden fees such as anual access fees, connection fees, misc fees for 911, consider the long distant and roaming fees of course the length of the contract and of course the subsidised price you will have to pay on the phone.
Company facts, Telus owns Koodo, and all 3 are CDMA networks, so their all on the same system. coverage and quality of service will be the same

They can all be expensive/cheap depending on your needs. Fees are pretty standard across the board with minor differences like Bell's SAF is $8.95 and TELUS' is $6.95 while Koodo is $0. Bell and TELUS have contracts while Koodo doesn't. Personally, I think TELUS has the best customer service of the three and that has a real 'value' to me.