[pip08456]

The above is interesting but me being me has always said that an ISP should only provide a service, which means a modem!

Anything else a business (or a residential customer) needs should be at their own expense and they support themselves.

You do not state how option 2 would have lost you overall control.

As regards 3, I'm sorry but if 2 had effected any control over the network, I'd've gone for 3.