It is poor when ISPs don't supply a MAC quickly. There's been a few threads about it on the Plusnet forum, and the reps there have got them theough within a few hours once the bad publicity was rolling.
I had trouble getting mine from my first ISP, Prodigynet, but that was rather a special case. Next was Newnet, who used to say on their website "within 10 minutes" of an online request. They failed miserably - it took twenty minutes to arrive in my email! I think they now say an hour.
Then leaving O2 it arrived with an hour or so of an online request, and I just got one from IDNet - I emailed a request last Sunday evening and it arrived soon after 9am Monday.
Good luck though with the migration. Let us know which way you finally choose. Is that monthly Pro option any use?
My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost.
Internet connection - IDNet Home Starter Fibre.
Live BQM.
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.