.....Good sounds cost real money......
When somebody asks for the "best" on this forum anyway they usually mean the best for cheap. That is problematic because there is nothing that is even close to "best" for less than several hundred bucks.
Bob
Bingo!!!
When people say they want good sounds for under $100 ... I have to shake my head..... because while you can get decent sounds, no sir, they will not be realistic enough to fool anyone. Coyote and TTS are good synths but they are definitely bottom of the barrel when it comes to sound quality...and yes, I have and use TTS every single day I am recording....it's my default BB synth. The only thing lower in quality it the wavetable synth. (IMHO)
There are a few decent low cost sample libraries... GPO is one, Miroslave lite is another.... The NI stuff is good and Kontakt is a benchmark and at the lower end of the professional sounding libraries. Some of the "best sounding" libraries are several thousand bucks.... and out of the reach of most home hobby recording enthusiasts.
Good does cost money. Best costs even more.