i would say don't test drive both because you'll want the r32 as the power is incredible but i would consider your financial situation and work according to what you can afford or which one you like the look of
That's bollox.
I currently have a (modified) Mk 4 R32 and wanted a Mk 5 R32. The dealer suggested an Ed30 as well but I dismissed it straight away thinking it would be too much of a step down from what I've got. I looked into getting an R32 -decided on the spec, got quotes on price, insurance etc. and had made my mind up. I booked a test drive for a few days later and in the meantime just did a bit of research on the Ed30 and found that really there isn't THAT much of a difference in performance between the two.
So I asked the dealer if I could take an Ed30 out at the same time as the R32. The day came and I test drove both. I came away with my heart set on an Ed30 and I went back a few days later and placed an order for one.
Now this has come from someone who loves their current R32, and had decided on a new one. But I gave the Ed30 a chance and TBH it blew me away. It actually felt quicker than the R32 (quicker for the type of driving I do, although the R32 felt as if it had more all-round grunt) and the only thing the R32 has going for it is the 4WD and rumble of the V6. The Ed30 is the better all-rounder IMO but you NEED to test drive both to appreciate both. I never thought I would like the Ed30 but it surprised me. I thought the the R32 would be a natural progression from what I have but I was wrong.
Add to that the fact the the Ed30 looks better, is more exclusive, can be tuned easier and be quicker than an R32 (and also has better power-weight ratio), will be cheaper to run/insure/tax etc. it's a no-brainer for me really.
If you put into consideration the amount of cameras and traffic on our roads anyway you won't actually be able to use the attraction of the R32 to it's full potential and get that extra 3mph/0.3 secs upto 60mph and 20bhp anyway.