Firstly, glad to see someone else has been getting out - was beginning to think this thread was dying.
I had a problem with knots breaking at the hook at the end of last season when I switched to a different tippet, was driving me nuts and lost two decent fish. It was a highly recommended material and used by a lot of great anglers but it just wouldn't work for me. I switched back to Stroft GTM and no problems since. I would echo Allan's comment that the Maxima will simply not let you down if you can live with the diameter, the knots don't have to be tucked either which they do with most of the posh stuff (in my experience).
Also, I have had Wychwood tippet slipping at the hook if you dont tuck the knots, but you are using this further up the leader so not sure if that would be a problem, but it is pretty slippy stuff. With Stroft, at the hook I use "The Knot" ala Paul Procter and recommended by Richard Tong on here. So far it has not let me down, is easy to tie with frozen fingers, doesn't use lots of tippet when changing flies etc. 3 (or 4) turn waters seem ok for tapering tippet.
Stroft, other than 'chunky munkey' Maxima, is the most reliable material I have used, so it is just a case of finding or using something you have absolute confidence in eg. what were you using/doing differently for the big fish you caught ( I know it was a streamer and not a size 16 dry) ! ?
L