Wheels are such a personal preference, and for me the 325's are nice but not a major difference to the originals to justify all that expense.
I had the same wheels as you (and still do over winter), but couldnt really afford new wheels/tyres all at the same time, so when a set of immaculate 296's came up with reasonable tyres for £600 I went for it despite the slight worry of cracks! I much prefer the look of the car with bigger wheels on.
ps: 293's are nice too..