Have recently driven a standard RS and here is what I of no knowledge thought!!!
Firstly dont like the fact that when I put my boot down in second, it almost snapped my arms! Can boot my LCR225 with no hands on wheel (well almost) and not have to worry about the steering pulling! Also, the RS did it terribly under braking where as the LCR stays pretty straight so was not given tons of confidence!
Drove well and was not as crashy over rough roads as the LCR which was a suprise and in town they both feel pretty much of a muchness for just pootling around.
Did not go too much on the gearchange as it felt to "rubbery" and "not connected" but thats a focus thing, or Ford thing anyway! People moan that the LCR's gearchange is too notchy, but I like to feel the linkage working myself.
I would say that the grip is pretty similar, if not a bit better on the RS so is the handling, until you hit brakes or gas that is!! RS did not feel as stable at all under hard braking, and I did not manage brake anywhere near as late as i do on the same road in the LCR as it just did not feel like it was going to do what i wanted, and feeling is what driving is all about. Once it did let go on me and it did it with harldy any warning, wheras in an LCR you can feel the build up of inertia and sense throught the steering, and your ass, when its almost an the limit and act accordingly. With the RS, there was grip-grip-inertia build up and a slide, nothing in between!!! LCR owners moan that the back is a bit loose on the LCR but at least you can feel it coming and besides, i like it and its better to be able to work with the rear than understeer into the wall! It's easier to get the back end in again with the application of power(if your fast), but if the front breaks loose you just sit and wait fast or slow!
All in all they seem pretty much the same, hot hatch, plenty of grip, plenty of grunt all the usual.
Could say I'm bias but I'd rather save a few bob and stick with what I've got! Mainly because its from a proven run (VW Audi mass used parts in other words) where many components on the RS were specially made and many people still have the "Dagenham Dave, Burbury cap" thing about fords. (and its blue!!!!)
But, before you all scream abuse, the RS was, still is a fantastic car and maybe if there was not some design issues (manifold) and the trick diff gave more confidence than violence, then maybe, maybe I would have!
Dont shoot!