Everything about Taxi Pmi works smoothly. The price is fair and fixed for peace of mind, website is easy to navigate, there are various payment options, and both taxi drivers that I had were very friendly and spoke good English (putting my meagre Spanish to shame, as usual). They were also exactly on time, and were able to pick me up from the airport at the antisocial time of midnight.
I will definitely be using them again.
Used for airport transfer to/from the airport, in a standard car.