I'd say the Porlex is hardier, but perhaps only cos I had it first and it got most use before grinding is now split between 4 grinders, Porlex used for camping trips. Rhinowares is at work & only used occasionally these days as I mostly bring a flask but grinds well with some fine bits in there. The handle interface is better on the Rhinowares IMO.
Unless you need the slim cylinder shape, don't rule out the Hario options - they're equally good.
I'd say the Porlex is hardier, but perhaps only cos I had it first and it got most use before grinding is now split between 4 grinders, Porlex used for camping trips. Rhinowares is at work & only used occasionally these days as I mostly bring a flask but grinds well with some fine bits in there. The handle interface is better on the Rhinowares IMO.
Unless you need the slim cylinder shape, don't rule out the Hario options - they're equally good.