Network work

I am looking for a few suggestions. Contact me via email or via the comments.

1) Is there a good alternative to TimeWarner or FIOS in Manhattan on 26th St.
2) Can anyone recommend a good low-cost dual-WAN router or firewall?
3) Who do people use as their WWW registrar? I'm thinking of moving mine.
4) Can someone recommend a good WordPress ecommerce back end? I need a good gateway for a friend with an Intuit Merch account.

Thanks for any advice. I'll update this post with the referrals.