Lotsa pressure-boosting heads now. Treat them disposable. Grohe, Kohler, their easy-clean rubber tipped nozzles might be superior to hobo generic ones, but they still won't stand up to deposits, esp in regions w/ very hard water.
The name brand heads we had, which came w/ the valves, are long gone. The no-brand ones are working just as well. With the latter, I now can afford to keep spares. What I won't suggest cheaping out on are the shower valves.
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