I love Imprezas, I'm on my 6th one just now.
BUT...
The New FRS is WAY better place to put your money if spending 28-30k on a punchy hot hatch. Handling will be better in everything apart from wet/greasy conditions, once rolling, I'm pretty sure it'd show a clean pair of heels to the Impreza and depreciation will be far less than the Subaru too.
Cheers,
Grant