The difference is only 30bhp to start off with (along with all the extras over std GTI), when you start tuning the difference gets much wider, Stage 1 GTI 245hp stage 1 Ed30 300hp, stage 2 GTI 270hp stage 2 ED30 330hp
K04 is great for tuning and since you joined here you will be
spending shed loads modding before you know it
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Car sales are slow at moment, thats not good news for you selling, but good news for negotiating on a new one (swings n roundabouts).
I think Ipod con was an option.