IME, a big difference between 1968 and 1318. And I haven't had much luck with 1318 clearing, not that I expect it to clear like 1968 but I mean just not wanting to clear at all. I also get a stone fruit flavor (like peaches) with 1318 that I didn't like until I brewed an APA with it, somehow it worked with that but I didn't like it in English styles. But this was only two different smack packs of 1318 plus a few washed-yeast batches from each, I've used 1968 way more. Big Sky brewery uses 1968 as their house strain.
Regarding S-05, some people (me for one) have such different results from S-05 vs. Wyeast 1056 that we, for all practical purposes, consider them different yeasts (i.e. I won't even use S-05). Don't think I've ever used White WLP001. I really need to try 1272, heard good things about it as an 'upgrade' from 1056.