I passed my test a few months ago, and i'm 24.
When i was looking at insurance quotes, it was generally the same price as the car. I was looking at 1.2 and 1.4 hatchbacks. But, my girlfriend has been driving for 5 years, and has 5 years no claims named driver discount on her parents insurance. Named driver bonus isn't as much as being the main driver obviously, but it's better than nothing.
So, i bought a 51 reg Peugeot 206 1.4, for just over £2000. The insurance for me as the main driver, with my girlfriend as a named driver was nearly £2000. Swap that around though, with my girlfriend as the main driver and me as the named driver, £850!
As it's with direct line, i still build up a named driver discount, and i'm hoping it will go down quite a bit after the first year because i will have turned 25 by my next quote, and i guess the first year of driving is the most risky to insurance companies