I'm using MGDuff and Tecnoseal Aluminium Anodes, boat goes back in the water on Monday 25th March.
The expectation is they will last a lot longer, we shall see. Happily I can check 6 of the 8 anodes and if necessary change them without taking the boat out.
There certainly is a lot of crap anodes out there, it's taking a risk using them, not something I'm prepared to do.
One thing I always do is check the bonding of the anodes to the boat by using a resistance meter (should be near 0 ohm) , doesn't take long and at least you know they are properly attached. If they are electrically isolated they can't do their job.
I buy the anodes from Anode Outlet, been doing that for a few years now, their website has got better and better.