I'd been frustrated by the "Golden Age" because it is often written or talked about and is often impossible to find, even in used bookstores. Heinlein can still be found, but even works of his, some considered classics, are out-of-print. Anthologies of those times are difficult to find, and modern anthologies often throw in a "Golden Age" story as an afterthought.
This anthology is different. Each of the authors featured in this volume (Heinlein, Williamson, Simak, de Camp, and Leiber) were the "Golden Age".
With the exception of two stories by Fritz Leiber ("Sanity" & "A Bad Day for Sales") whose pessimism put me off, each story in this volume captured and held my attention throughout. The themes of these stories inspired my own speculations, and unlike much of modern science fiction, the entertainment value alone makes this volume worth purchasing.
Frederik Pohl has written succinct, informative introductions and recommends further reading which has sent me to the used bookstores already. More importantly, however, he has chosen great stories and has let the authors speak for themselves.
Personally, I would recommend "The Year of the Lottery" ( a humorous story about the ultimate bad day), "With Folded Hands" (inhuman "perfection" taken to the extreme), all of Clifford D. Simak, and "Gun for Dinosaur" (30 years ahead of Jurassic Park and infinitely superior). However, cracking this book at any place will lead to good results.