If you have the system always running most of the cartage back to the top could be handled by the siphoning effect, like draining a washing machine or siphoning patrol.
You'd need energy to get it started but after that it should keep siphoning as long as there's liquid to siphon.
Samsung, bit more pricey but both my ssd and ram are both Samsung chips and I haven't had a single problem with either.
E. Seems that further down the thread someone is saying Samsung is having issues too, which is dissapointing as I've always trusted Samsung.