Can I ask why if your 40 or higher?you can get a decent Alu frame road bike with that money. If you want to join the MAMIL bunch look at Trek, Giant or Specialized brands.
The most important thing above all else is get one that fits well and will be comfortable on long rides (especially if you're age 40 or higher!).
why buy new when there are loads of good 2nd hand machines around for even less money................ simples