Spend the extra and go for the strike, you'll thank me when you come to sell! Saying that, when you come to buy too, there is a waiting list for nearly all 1's but we have 3 strike diesel in stock.
Not had the chance to drive the CRDi yet, but my colleagues seam to think its the best car that Kia sell! Found the 1.4 Zapp i was in 2 months ago to be ok, eager when you wanted to press on, not bad with fuel and fairly practicle. Understeered like a bastard on those pitifull front tyres though and the plastic steering wheel agrivated my hands, had to wear gloves driving it in october!