OpenVPN client devices

[paguro]

Hi all,
I need to set up an openvpn connection with a small office abroad,
I tried dd-wrt (set up as a router, with openvpn client) on a buffalo router and it works.
DD-WRT is not so stable (buggysh) so I am looking for a different solution.

My idea is to use a device (not a computer) the most stable as possible.

Do you have any advice for openvpn client appliances?

Thank you!
Paguro

[paguro]

paguro do not like to play alone

dd-wrt
tomato
pfsense

can you extend the list?