In reply to Taurig:
> Thanks Mark, that's more than I can likely get through this winter. I think in particular the North ridge of Stob Ban could be the one to go for first. From the photos I've found it looks a little harder than Ben Starav, but not hugely so, would you agree?
Yes, I think that's fair.
> Re: Tarmachan Ridge, having done most of it in summer (was with the gf, she didn't fancy the 'bad step' so we headed back) I'd agree the difficulties would be short lived, but I think it'd still be worthwhile.
Very worthwhile: it's a great winter walk. The 'bad step' is easily avoidable to the north (left, looking up) if necessary.
Some other routes worth doing in the Southern Highlands which involve some easy Grade I territory but are not proper ridges:
North buttress on Stuc a'Chroin
North side of An Stuc
NE side of Cruach Ardrain
North spur of Beinn Achaladair