you'll find loads of other threads giving both specific answers and discusssing the general merits of the two types, but...
For me, I just prefer the Warrior. Flown both, didn't really like the Cessna (cramped, under powered). That's just a personal preference. Also, I would expect to be flying mainly the Warrior after I get the license and would rather have 50+ hours experience on the specific type I'll be flying, rather than just the conversion time.
While slightly more expensive, the money doesn't matter really, after all, I could always just get a cheaper hobby if I wanted to save hundreds of pounds. At an extra £11/hour where I fly, it adds just over 10% to the total cost, and for me personally, makes it much more enjoyable, which for me is what it's all about. For an atpl wannabe on a budget, things may well be different.