I went through 3 sets of Cooper Zeon LTZs on my RRS, they lasted me about 40-50K miles each on average. They are OK on fresh / soft or groomed snow, but over packed snow or ice they will pretty much slip and slide like any non-winters. As far as noise they start quiet - pretty much as quiet as the stock tires in my experience - but do get a good bit noisier after a few thousand miles and downright loud after 25-30K miles, again that's fairly typical of more aggressive A/Ts. Rotating them regularly (I almost never did...

) may help. On-road handling and comfort are otherwise very good for an all-terrain on both wet and dry roads and they feel secure at just about any speed you can hope to achieve with an LR4, just don't expect the precision of a summer or all-season road biased tire in high speed turns (a lot will also depend on the size you pick, obviously. The more sidewall you add compared to a stock size, the more handling capabilities you will be giving up.)
They are an excellent go-anywhere choice with very few drawbacks, but specialized ice+snow tires (those with a snowflake symbol on the sidewall) are the only ones I would use during the winter months if I lived in areas where ice and snow storms were a common occurrence. Fortunately I don't have that problem here in So. Cal., the Coopers did just fine for the occasional skiing trip up the local mountains.
For my new LR4 I have decided to switch to Yokohama Geolandar AT-S, but since I just got them I have no opinion on them yet, other than they are whisper quiet and look good.