[Pazuzu]

I'm moving my company into a small suite from my home, and I want a desktop phone for the office.
I have a Google Voice number for the company. I'll have interwebz available from a wall outlet. I want classic business desk phone that will only be used for business calls, and will never be used for it's full potential. I always want this to be cheap, because I can simply continue porting the GV number to my cell instead of spending any real money.

Google Voice CANNOT be forwarded to a machine (phone), it must be forwarded to another phone number. THAT number can be associated with a phone.

Has anyone gone this route? Seems like my two options are:
1) Any old VoIP phone. Associate a phone number to it from one of the SIP phone number brokers like CallCentric. Then have GV forwarded to that number.
Cost is one used VoIP phone ($25), and a monthly fee for the SIP number of something like $2/month.

2) Get an Ooma Telo, which plugs into the ethernet, has a classic 4 wire phone port out, and has a built in associated number. Then, plug in any cheap old business phone. Cost is the Ooma ($50-60), and the basic phone ($25 on Facebook).

Basically, a one time fee or a small monthly fee.

How do you guys do it? Have you used an Ooma and found it to be easier? Do you have another solution?