I think your consultant decides whats best for you depending on your weight, height and target. If your consultant has said 10 syns, I'd go with it. But you're right it's usually 15. I was given 20 though!
I joined with a temporary consultant & she didn't even mention syns to me. My current consultant said I should have started on 20 syns so the odd day I don't worry if I go over 15 syns.
We have similar stats so I'd guess 20 would've been right for you. I'm not sure when the change from 20 to 15 happens, I think it might be a personal choice or maybe if your losses slowed down. When I was on WW my online thing automatically took points off me as I lost, then I got them back when I gained, it was a bit weird.
If you're doing well then stick to what you're doing
edit: read your stats and wow you're doing amazing!
The thing that scares me with WW is it's not just your treats that reduce is it? I wouldn't like to have to eat less pasta, potatoes etc.
Your syns are not based on stats-they allow everyone to have between 5 and 15 a day-whether you are 9 stone or 29 stone it's all about making sure you don't feel deprived
http://www.minimins.com/slimming-world-weight-loss-diary/187905-jos-journey-infinity-beyond.html
Those of you that get 20 syns a day, do you mind me asking you what weight you are as I can't see your stats on my phone?
I do often wonder if like WW they give more syns to some people.
rachpid said:Hmm, that's strange, I started at 21st 11 (5' 7) and I wasn't told I could have any extra Syns, just the standard 5-15. I usally average about 12 a day - sometimes more if I need them, sometimes less.