Kosher Palette was great. It was one of the first Kosher cookbooks I've used which featured original dishes with interesting combinations of ingredients, almost all of which were successful. Naturally, I was very excited about Kosher by Design, which was also good, if not quite as great as Kosher Palette.
Kosher by Design Entertains, on the other hand, was disappointing. Many of the recipes seem to be more complicated versions of recipes I already have, and the results are often mediocre. For example, the Balsamic-braised roast is okay, but I have a recipe for Pot Roast in Wine Sauce which is nearly effortless and tastes, if anything, better. I have a Butternut Squash soup recipe which, in my opinion, is way more interesting than the Sweet Potato Soup she raves about, not to mention easier.
I was disappointed in the lack of originality of many recipes. Recipes like "Angel Food Cake," "Apple Kugel," and "Yellow Split Pea Vegetable Soup," while presentable, are not exactly the unique recipes I've come to expect from Susie.
Many of the recipes, in addition to being gratuitously complicated, require equipment that I have neither the budget nor the kitchen space to purchase. I suppose this would not apply to people whose kitchens are not kosher, but as a kosher cook I just can't see investing in a food processor to be used only for meat recipes, or a mini-bundt pan to be used only for dairy recipes.
On a more positive note, the photography is beautiful and the party pages are a lot of fun. Although I'm not the type to throw these kinds of parties (and who is, really -- how realistic are those complicated menus if you're serving a crowd of people?), it's fun to fantasize and enjoy the beautiful pictures. I suppose the book might be worth it for that, and for the few recipes which are worth doing. Just don't expect the originality and ease of Susie's previous books. While you can definitely get more creative if you're paid by the hour to cook and have an expense budget for your equipment, most of us are not in that situation.