OPL stood out because they were the only company we could find that would offer a PBX hosting solution with no strings attached. This is exactly what we needed when we first set up our VoIP network and it was quick to provision and very easy to get started with.
My experience of working with OPL has been 100% positive, right from the first consultation phone call about 18 months ago. Everyone I have engaged with has always been helpful and friendly, and on the (very) few occasions when we have had technical issues, support response times have been very quick. The system we have looks after itself, and I feel very confident that whenever help is required OPL is there for us.