First, although I adore this series, I would like to demur from the description of this series as a comedy. Certainly there are many comic situations and laughable characters, but Powell's (pronounced POE-UHL, not POW-UHL) comedy is intended less to make uslaugh than to make ussmile. I know many novels that are far funnier than this one, and if that were the book's only virtue, it would not enjoy the status that it does.
Above all, this is a work that limns in almost tedious detail the interrelations and interworkings of a segment of English society in the 20th century. These first three books take you from the early twenties into the early thirties. Despite the series great length, there is nothing epic about the scale of the novels except for the overall length of of the series as a whole. The scenes are all horribly mundane. A party here, a dinner there, a chance meeting in a bar, more parties, more dinners. But as the parties and dinners multiply, and as one social encounter builds upon another, the series does indeed take on an epic quality.
This new edition is far more attractive than the old mass market edition of the series, but I do wish that someone would have taken the effort to supply an appendix (perhaps to the final volume) that would (as in some editions of Trollope and Proust) explain who all the characters are and to whom they are related. By the sixth volume in the series, I began to find it extremely difficult to remember precisely where each character fit in the social world as a whole.
The greatest virtues of Powell's series are his richly delineated characters (of which there are at least fifty to a hundred who are to some degree significant) and his marvelously elegant prose. I believe that anyone who loves novels would love this series, in particular those who have enjoyed Proust.