Another new "convert" to EPR here (well sort of) .
Random thoughts and first impressions..
I wouldn't want to do this without a DFP!
When you drive a car without aids (that doesn't sound right, does it?) you find the big difference when compared with GT4. Basically, you can't take the same liberties with the break and throttle that GT4 allows, and frankly, if EPR *is* more real in that respect, I'd predict most of us would kill ourselves driving anything fast on the Nurburgring if we'd learnt to drive with GT4 (although GT4 does tend to bounce you around more). Interestingly, my GT4 driving seemed to improve after driving EPR for a few days. However, as far as I can tell, you don't get the same really violent snap-back overstear when correcting/controlling a slide as you do with GT4. I suspect GT4's is overdone (and imo problematic in its unpredictability) and EPR's underdone(?). Trail breaking works very well. And if you touch the breaks and turn, you can throw the back end out for drifting whereas in GT4, I find anyway, that that doesn't work very well and it's best to release the throttle and and steer violently, and even feint first. I much prefer the Engine sounds in EPR.
The perspective seems easier to judge to me. I've always found a tendency to misread bends with GT4 (don't think it's just the understeer) but I think I'm doing ok when the outside of the bend just rushes up and catches me out. I remember in GT2 going round in circles trying to do a U-turn on a straight and not being able to find where 'behind me' was - although there was a strange turning that I judged to have appeared about 90 degrees to the right!
Which reminds me: it seems to have been missed here, but Tiff Nidell lost another GT4 challenge a while ago. This time with game sim fanatic Jason Bradbury of UK TV's "The Gadget Show". They competed in a time trial on GT4 motorland (DFP) and then with the same car (White VW Golf GTi) on a real track. Tiff understeered straight off into the sand in GT4 and got quite annoyed - "it did go wrong.. it did...it didn't do what I wanted it to do". Maybe it's the same problem. He lost by 2 secs on GT4 (which I suppose isn't bad if you go off) and in RL beat Bradbury who'd never driven on a track before by 6 secs. (RL - Tiff:1m 33sec/ Bradbury:1m 39sec). Bradbury's lack of fear (that Tiff attributed to playing sims) scared the life out of him.
http://www.jasonbradbury.com/jason_bradbury/2005/11/sim_addict_vs_f.html#comment-11606845
Anyway, my initial complaint about EPR is more cosmetic. Things like the depressing, black/grey load screens spoil the experience for me. It's all a bit dour and miserable. Nurburgring looks like it's on a dark, gloomy winter night and you can hardly see the boundaries of the road at a distance (I assume the weather/light doesn't change from that in the free racing mode). GT4's is much nicer place to be. This all affects the way I think about the game. Maybe I'll learn my driving skills on EPR and tart around occasionally on GT4 for fun with road tyres (to add some realism to the physics) because the scenery's prettier. :-)
I don't think I've ever concentrated so hard as when playing EPR, and, imo, it's certainly more rewarding if you do things right. I always feel with GT4 in, say, the licence tests, you can know you've breaked better and applied the power more smoothly than a previous attempt, and you find it's made no difference to the time; I've often got my best times in GT4 by getting angry and aggressive, which I suspect doesn't work in RL, and I'm pretty sure wouldn't in EPR.
Does anyone/everyone use the VGS display information? I just turn them all off.