I've currently got the PMC Twenty5.21 (on their dedicated stands) on home demo. They seem quite fussy about where they are put, and getting the toe-in right to find the sweet spot. It's funny seeing them there, where the HB1s were - they are so small in comparison.
I like the PMCs a lot, they seem to work pretty well with my system. They're really good at low volumes, which is important if you live in a flat as I do. They are really detailed and give out an awful lot of bass for just a small cabinet. They're also fast and fun. I played Ese and the gang hi-res digital files of the "Up In Smoke" album, as well as the 50th anniversary "Electric Ladyland"; on CD, chunks of the Bobbie Gentry box set, the Erykah Badu live album, Floyd's "Meddle"; and "Elvis Is Back!" on vinyl. Everyone was very impressed, and I certainly enjoy the presentation of the music.
But in a way, I'm not sure if they're as good as the Heybrooks. This may sound odd, comparing a £2,000-plus pair of modern speakers with ones which cost £99 and which are 35 years old. Maybe it's because I've lived with those HB1s so long, I've got used to a very particular sound and getting my head and ears around something else is proving tough.
I can understand why people find choosing new speakers so difficult!