As far as Moog parts, some are cheap, but most that I've used have been fine. In fact, the Moog lower ball joints look better made than the ones I removed from the car.
Here's a pic of one that just came in the mail (notice that it DOES include everything that the Lemforder part does):
As far as removing the upper control arm without a spring compressor, the lower arm AND the shock hold everything together, there's no way the spring will come "flying out" and it's about a 10 min job (if the wheel is already off and car jacked up.)