REI; titanium, interchangeable "spiky" (VERY coarse checkering actually) tungsten tips, rubber covers that work, removable snow rings that work and they collapse and are practically weightless. But they go for like $100 ea.; you really pay for the performance of these. I just bought one myself, but two would be nicer. They had some that cost less too, but didn't have all the perks these did. Depends on what you need and how much and how you plan to use it.
Get one good enough to not collapse or bend if you lose balance enough to fall. REI is a good place to find this kind of stuff, but it's costly. They do let you try the stuff out in the store though, so you aren't exactly buying blind.
But my mom got a pair from Walmart I think that are well made it seems, weigh more but cost a lot less. They serve her and her husband well.