Is there a definitive best tactic?

I've made up lots myself and tweaked other people's uploads, but what is generally regarded as FM13's best tactic?

I think the 'V' shaped 4-5-1 is by far the most versatile tactic on FM, it's excellent for both attacking and countering. although I'd be wary of suggesting a 'definitive' tactic, all of them lose some of their effectiveness after a while unless you switch things around. really you should be altering your tactics on a game by game basis to counter the oppositions formation, referee strictness, weather conditions etc etc.

I use my 4-5-1 since FM 2006 so there is in my opinion. Of course its not tactic that allow you to win all trophies every season but mostly game looks good. It's good for almost every team, depends also of players that you have. Don't download tactics from other players. Try to make one yourself it's great fun thrust me! good luck.