OP: Not sure if this has changed, but I was told at a corp store you couldn't go on the WindTab with the HMP. You had to switch to the new $40 plan.
Here is why I didn't want the Tab (and the reason I went and bought outright at Mobilicity.
1. Wind wouldn't sell to me (a previously loyal customer)
2. Mobilicity was $599 (not $649)
3. I have an existing Windtab of $100 (from my Nexus S in 2011 DOH!)
So lets pretend Wind would give me a tab of $200
649-200+100 to pay out existing tab.
So I would save $50 over 3 years. HARDLY worth my effort, especially when they made us wait 2 weeks.
I am actually considering adding a line for my spouse and getting a 2nd GS3 from Mobilicity and getting the 30 unlimited plan at Mobi.
Wind messed this up hardcore. The only reason I care about wind is their HMP.