Car rental companies in Davis and/or out?

[bobobb.livejournal.com]

I'm coming to Davis Square this march to check up on my property and need to rent a car while I'm in town. I hate (with a passion!) car rental companies -- unexpected fees, long waits and lines, up-selling, etc. -- are there any companies people have used before in Davis Square or Somerville or even from the airport that have been decent?

Recommendations would be welcome!

Update: Thanks all for the recommendations! I went with Enterprise in Central. Zipcar would have been great too.