And for me that convertible has to be the iconic Mazda MX-5 - the world's best-selling two-seater.It's a roadster that gives you all the thrills you could possibly want from driving without breaking the bank. I've been fortunate to drive numerous convertibles over the years from the likes of Mercedes and Audi, but there's something about the MX-5 that keeps me coming back for more.And it's not just me that thinks they're special. Even my four-year-old son told his teachers at nursery that "Daddy's driving around in a cool sports car".I think it's partly because it was the first convertible I ever drove. A former work colleague of mine used to own one and, after a long day working in London on a warm summer's day he was feeling drained and couldn't face the journey home.He threw me the keys and that is where my love of the MX-5 began. True the A1 may not be the most exciting road in the world, but the please I got from those hours driving on that balmy evening have stayed with me ever since. And yes I did get the silly half forehead tan as well for good measure.So what is it that makes the MX-5 so special? Well firstly it's the look of it. All I can say is that people still think that Mazda's little sports car is still driven by beauticians and hairdressers then they have very good taste.There's been numerous updates of the MX-5 since it was first unveiled 25 years ago, but it's testament to the styling that little has changed to the overall exterior apart from a few tweaks here and there – quite simply if it's not broken why fix it?Instantly recognisable with its distinctive front end, the MX-5 for me is the link between the classic cars of a previous era to what we drive around in today.And that is nowhere more evident than in the interior. If like me you are taller than six foot then you have no chance if getting nor out of one elegantly due to the space restrictions, but once you do squeeze your way in then the car truly comes alive and the leather seats are very comfortable.I drove the two-litre Roadster Coupe Sport Tech Nav for a week, and as with my previous experiences I can honestly say that I loved every minute of it.It made my daily commute to work a lot more pleasurable than usual, and on a rare glorious weekend weather wise I was able to take the roof down in just 12 seconds with a simple press of a couple of buttons and a click of a handle.With the roof down is where this car really comes to life, and I challenge anybody not to smile while they're driving one with it in this guise. It truly is magical.The short shift gearbox is great, and you get that instant kick of power when you press your foot on the accelerator. The sound of the engine with the roof down is pretty spectacular and, thanks to its light weight, it handles and grips fantastically too.The MX-5 comes with all the modern technology that you would expect of a car these days, but they're laid out in a simple, classic way that I'm sure the original designers would still give a nod of approval to all these years later.The model I drove also came with heated seats, 17-inch alloy wheels and climate control air conditioning.The 6.1-inch sat nav and media system is taken from the other cars in the Mazda range, and is easy to use, and within seconds my smartphone was connected up to it with no problem whatsoever.So what's the downside of the MX-5? Well I can honestly say that I can't think of one. The boot isn't the biggest, but you can comfortably get a couple of overnight bags in it, and at the end of the day you don't buy a car like this if that is a consideration.Owning an MX-5 won't cost you the earth to run neither as CO2 emissions are a relatively low 181g/km and fuel consumption is 36.2mpg on the combined cycle.A new version of the MX-5 is due out later in the summer, and having seen pictures and read reviews of it I have no doubt that it will carry on the tradition of being a spectacular sports car. I cannot wait to drive one.Prices for the current model that I drove start from £20,000, with the model I drove coming in it at just over £23,000.