Tuners on my Spector pulse 2 were not the best but sufficient. (Other very similar ones lasted 20 years.) But one wasn’t. So gotoh or schallers. Schallers were in stock, lightweight, perfect drop inn. And they are good!
Had schallers on my old pro basses and my best 35yr old guitar, never failed.
Bit stupid such an expensive bass had problems, but sound and playability was so amazing. Didn’t want to sent it back, who knows what would happen. (Sold 4 fine but suddenly obsolete other basses after I got this one)