I've been a customer for over a year first with the SSL and now with both SSL and PPTP for my Android device. Both work beautifully, although speed can sometimes suffer for security, and I very rarely have a problem with either service.
On the occasions I have had a problem, or simply a query, the customer service department have been amazing. Not common to find customer service that seem to genuinely care about their products and customers. Knowledgeable, helpful and quick to reply to queries.
5 Stars, and a definite future customer!