Elite cuissi. Been using them (or their earlier guise) for 25 years. Not lost a bottle yet. Except when I’ve dropped it.
Until very recently elite used to be fitted to a good number of the bikes used on the cobbled classics. Now there’s propper money in cages, so sponsors get funny if you don’t use their latest 100 dollar plastic fantastic cage. And drop bottles.
Still some of the top guys use cuissi with the logos peeled off.
Bottles, i now use podiums, as i have to pay for them 🙁
Prior to that it was whatever i was given! (Still never lost one!)
do they even make bottles that big? Biggest I’ve seen is 750 ish.