I am very inexperienced with cocaine, but on the last occassion I used cocaine it was provided by a very close friend whom at the time was consistently supplying me with the highest quality drugs I ever had the pleasure of consuming. I was informed this cocaine was good quality cocaine and given the quality of all drugs I am knowledgable/experienced I obtained from this person, both before and since this incident, leaves no doubt in my mind that is was good quality cocaine. I personally found the high quite relaxing, like relxing isn't the right word in a traditional definition, but when you are talking about STIMULANTS, quality cocaine is about as relaxed as it gets for me. I would also note that the cocaine on that occassion was instantly obvious that it was higher quality as soon as it kicked in, I found the weaker shit to be a lot more jittery and you could say "rushier" where the good cocaine gave me a strong sense of contentment and a level of confidence I can seldom reach on stimulants without consuming enough the resulting paranoia counteracts the confidence to a degree. Although I never once binged on it, in the doses I took I never once felt paranoid on cocaine.
Personally I prefer meth to cocaine but if they had equal bang for buck I would see myself leaning towards cocaine as I tend to find being intoxicated on it is a tad less obvious and I also have infinitely less compulsion to redose or get on again the next day.