researching trainers running v.s. training ~ i need a 2in1

i'll keep this short, as i may have a viva later today :( FFFUUUUUU!!!
so over the past few days i've been looking to get some new trainers, the ones i currently have are a simple pair designed by Next, but have stood with me through the past 2 years torment. so yeah, i was looking at nikes air, lunar and tailwind until i saw this baby:

Mizuno Wave Prophecy

what is this demon?! DO. WANT. the only problem is the cost! the cheapest on the internet is £150.00 exc. delivery charges. what i like about it? it looks... so awesome! its like an artwork, its like your muscles, the tendons, the weaving of the spindles oh AND the blood vessels, omg i'm in love! x.x

before i'm buying anything however i need to test the nike trainers at my nearest sports direct or something equivalent.. another problem i am having is the jargon associated with these trainers - all i want is a pair of trainers to wear for both the gym and running - be that at the treadmill or on the street.. ok pavement, or park or aghhhkjghdkjl kljdf gb you get the idea.. but i want something that would really help me out, i get blisters and swelling of the toes from my current trainers regardless of wearing the right sports socks and that needs to stop if i want to push myself.. so yeah, i need new trainers. its been awesome my trusty Next trainers but i need something more comfortable in the long term.