I prefer to sell them rather then spending them, and I don't have many choices to spend it so I convert it to my local currency and then spend.
If you could find what you want to buy on a online site or via a service like purse.io then you would be saving money spending your bitcoins.
To cash them out there is always some sort of fees involved and often you will find that if you can pay in bitcoin you will get a nice little discount.