Autocar's community website is all about brand rivalry and motorsport heritage this week. Which is best, BMW or Mercedes? Autocar recently reported on the new C-Class, and how it rated up against its nemesis – the current BMW 3-series. What do you think of these models; which would you have and why? And not quite so simple, which is the better brand? Would you choose the laid back luxury of a 'Benz over the dynamic ability of a BMW? And is it really that simple? It probably isn't, but there's plenty of room for debate, so click here to let us know what you think. Meanwhile, Colin Goodwin managed to get his hands on a Prodrive Aston Martin Vantage V8, and conveniently, it's also the 100-year anniversary of the Isle of Man TT. Click here to find out how the first model launched under David Richards' reign got on around the historic roads of the Isle of Man as Goodwin celebrates a century of road racing.Meanwhile, have you ever wondered whether the Caparo T1 has got a little too much power for its own good? Or perhaps you're perplexed by why Flavio Briatore has started his own fashion empire. The Silencer has the answers to all of this, and believe me, they're not what you're expecting. Have your say on MyAutocar.com.