I currently moved a company to a new location and they are in no longer need of their Netgear UTM9S (still has a few months left on the support) and has the the wifi card inside of it although it was dropping wifi a bunch so I turned it off. They were sharing it with another company in the same office, so I bought them a Sonicwall TZ105 with wireless built in.
I haven't installed any of them yet, but wondering opinions on which is better. I know this is subjective, but I felt the web interface of the Netgear was ALL over the place and not the easiest to navigate. It did it's job though and maybe need a reboot once since it was put in commission.
The company only has about 5-6 machines, needs VPN capability, and multiple mobile phones/tablets. I got the Sonicwall with the 1 year Total Secure because they want content filtering so during tax season part-time people aren't browsing the web not doing work.