I think @Parson was not referring to how they were rated in their day, but rather how they are rated now on somewhere like GoodReads. And I'm afraid I think they are far more dated than any of the other series you have mentioned. However we have had this discussion before so I won't push any further than that. Just to say that I consider that Anderson wrote many books that were much much better than these.I don't remember Dominic Flandry or any of the 'Technic' series being badly rated, they are high space opera , like I said pitched beyond Star Trek level. Never heard that before.