For £1500 I think you can get something considerably better than "entry level". Nothing wrong with going further up but the bike shops would say that because they are a business, and therefore trying to make as much money as possible. I got a CR1 for £1600 which is great but the wheels it came with were GARBAGE!! Research the major components of the bike you intend to buy.
On the plus side, if they stint on wheels, then for £1600 it's likely the frame will be better.
I've decided that wheels are a right pain in the ****, because invariably you test-ride the bike with the stock wheels and buy based on that, but when it comes to upgrading, you're basically taking a punt at your given budget, and the ride quality changes dramatically from wheel to wheel but you won't know how until you've bought them, fitted and ridden them. By which time it's too late to send them back. Expensive risk to take!
I love my new Fulcrums and they are definitely faster and stiffer than the Wildcats I had, and lighter by a little bit, but feel strangely less exciting when accelerating, and less efficient when climbing (they're not, though). I also detest bladed spokes because of the whirr, but this is something I'm training myself to like!
Stu