I've borrowed both books from the library. The sweater book has mostly seamed sweaters, except, I think, for a couple (raglan and yoke). If you want seamless, I'd go with Knitting from the Top by Barbara Walker. You'll have to do a little math (unlike the Budd book), but she presents a seamless way of doing pretty much any type of sweater you want, top-down, in the round. I think the other Budd book just has one sweater in it, that's seamed. One nice thing about the Budd sweater book is that she gives yarn estimates based on gauge and size, though.
Definitely see if your library has them.