Not "very often noisy", unless your collection was derived by shopping at Goodwill or at yard sales, but occasionally noisy, yes.
GHD, When you say it is your "experience" that turntables can enhance or reduce ticks and pops, do you mean to say that with the same tonearm, cartridge, setup, phono stage, and LPs, changing only the turntable per se made a difference? I'm more than skeptical but of course I am in no position to doubt what you say.