I did the Mamores last summer. I prefer a lighter rucksack so I did the full thing in a day starting and ending in Glen Nevis.
I personally prefer east to west. You start the day walking through Steall Gorge + Falls (gets me inspired!) then you get the more isolated eastern Munros out the way first. Then as you get tired toward the end the ascents get smaller, and if the weather is good you're walking into a setting sun with an easy descent to the glen down the ridge of Mullach nan Coirean... of course in rain and a west wind it's a lot different
It's great for dropping off the rucksack - drop it and return for Sgurr Eilde Mor, Binnein Mor, An Gearanach and Sgurr a' Mhaim.
There are water refills around the Eilde Mor/Binnein Mor area, then it's pretty dry until you reach the outflow of the wee loch below Sgorr an Iubhair, which is totally ideal. Is a great campsite, I did this once, shame the weather sucked!
As for Corries to Nevis. AMAZING. Couldn't recommend it highly enough. Even better than the Mamores imo and they're pretty alright. Assuming you're good for getting over Carn Mor Dearg (the east ridge is easy), the hardest bit is getting onto the Aonachs and (not such a big deal) getting off them.
As for getting onto them, the easiest route is to go to the lowest point of the S ridge of Aonach Beag, immediately north of Sgurr a' Bhuic, then follow that easily to the top (though a long way!). The alternative is to go straight up from the bealach with the Grey Corries, into a gully which is topped on one side with a massive overhang. It's taller and more direct but equally, it's steeper, more loose, muddy and generally quite manky in a bit of a steep situation. I used the former route last summer because the latter (done previously) was still rammed with snow despite being the end of June (last summers snow held on oddly long though?!)
As for getting off the Aonachs, really just dropping off the bealach between Mor and Beag and follow your nose. Steep, rough and tedious but never really a problem imo.
As for getting onto CMD east ridge, go past the wee pink granite wall at the base of the ridge,
then go up - a vague path and line of least resistance.
Cheers
Kev
