I shopped around for a while when looking to store my E Type Jag last year.  It wasn't just the fact that Belfast & Down Self Storage were cheaper than anywhere else I had priced, for me it was the personal touch from Harry & Simon.  When I 'called in' to enquire I ended up chatting for an age over multiple cups of tea and coffee.  They offer an old fashioned approach to service which is becoming harder and harder to find!