I've used several ul stakes, but have gone back to a mix of Groundhogs and Minigroundhogs
it's shelter dependent, but for anything that really requires holding- the longer original Groundhog is what I use- for example the front/rear guys on a a-frame tarp setup, Mini's for the rest
there are lighter ti shepherd hooks, etc and I'm sure there are places they might be fine, but have had too many pull out for me