Interested to know if anyone can recommend a reliable product provider? Looking at the ads for some of the Canadian on-line pharmacies, their pricing is very competitive for ED meds. Just not sure which are legit? TIA.

I would not recommend. I ordered once. Now I get at least 30 calls a week from various phone numbers asking if I want more. If you do order get a burner then throw it away afterwards.  Also don't think it's from Canada more likely India by the accents of the people on the phone.

http://canadianpharmacyking.com/   Good prices. You need a prescription  

You can get generic sildafinil(a lower dose) for very good prices here in the US. You will need to get a prescription.