Have you considered second hand bikes? I see you have one in your original post, but there are many more out there! You'll get more for your money - It's just a case of make sure it is in good nick!
Sorry didn't refresh the page before posting so I didn't see this, I have read it can often be the best bet but I have really no idea what to look for so I'm a bit uncomfortable in doing so. And just finding any in a viable area has been frustrating, but I'll keep looking before I do buy a bike just in case a corker pops up![]()
Shame you are such a big chap http://www.gumtree.com/p/for-sale/giant-defy-4-2010/95175662
Stick with Decathlon...![]()