Point Of Sale Hardware What Is The Best Web Based Retail Point Of Sale System (POS)?

What is the best web based retail Point of Sale system (POS)? - point of sale hardware

Since everything is moving in the internet web, I'm looking for a robust POS (Point of Sale)-based software, on the state of transactions that can each handle a cash register and several bar code reader, the incomes of workers, the cash drawer and the base material., inventories, reports% MP, 5000 + products, etc.

I saw ...
- Halo (www.haloretailpos.com/) have not prove it in a position that asks you to share your information to send them first
- Legacy (www.posterita.com) do not look good if you use it?

Thanks for any help or information you can offer.