Craig
I looked at both of these before changing last october.
Performance wise its the garbo easily, its stiffer and longer; the milo is a good pole and good vfm but id look at the browning z9 over it.
A friend of mine got a gmax800, so far he’s had two replacement 14m sections under warranty as they broke whilst twirling rigs, he’s not hard on his gear. Its a lovely pole for £1300 but the sections are paper thin and “under a lot of tension” if you know what I mean and therefore there isnt much flex to allow for any abuse at all.
I seriously contemplated the gmax1000 but heard of too many breakages and went for a colmic x5000 instead which has being superb, its very slim, responsive and strong with a great finish through your hands. it is however more expensive than your other options when u factor spares in, i managed to get a whole spare pole and kits at the right money.
Good luck with your choice.