Major difference with TELUS and Shaw home phone is technology. I can't speak for quality of Shaw as I've never tried. But from what I heard/know...TELUS' phone is powered from their Central office...that is why in a power failure, your home phone will still work. Shaw has a backup battery but this doesn't last long from what I heard...somebody correct me if I'm wrong.
The other thing I have heard is about 911 service. Unless things have improved, I have heard of emergency services being dispatched to wrong addresses for those who use IP technology phones. TELUS is regulated by the Gov't to provide 911 service, always have, always will. The newer providers don't use the same 911 service as TELUS and therefore don't have the experience in it. Another issue I have heard is if you live in an apartment building, there are sometimes issues with your enterphone front door entry system when you use Shaw but I believe they have a fix for this now.
As for price, if you use long distance, I believe Shaw has some great Long distance plans. I like my hardline connection, don't make any LD calls and I like the security from the infrequent power outages we face in the LM so I stick with TELUS.
As for internet, TELUS is starting to lay fibre optics...starting with High rises/apartments and next with new single family homes. (Similar to what Verizon is doing down south). This will allow speeds upwards of 100mbps one day...eventually even 1000mbps for apartments.