I need to use this, or something very similar, to connect a location
wirelessly to a nearby internet connection.

I've read some bad reviews, but I can't find much else that does the
same job.

Any suggestions?
Any experiences to share?

The link will include several VoIP lines and needs to be solid.

Wireless (radio) performance should not be an issue as it would be used
with high gain antennas and it is no more than 30m(90ft) away with line
of sight.

Thanks in advance,
Alex