What is you're favorite timer/stopwatch app?

[superunderscore]

Hi all,
I'm looking for a timer/stopwatch that really rocks. I've tried a lot of apps, but nothing that has everything you need.
The perfect app should be a timer and stopwatch in one. Ability to run under lock screen, save preset times, WP metro style, and no full screen ads.
Does someone of you have the app I'm looking for, or is pretty close? Please help.

 

[Guytronic]

STOP N' GO | Windows Phone Apps+Games Store (United States)
I used this one for a long time.

There's so many on the store it's difficult to recommend any particular timer app.

 

[IMStrugglin]

I use Avirall Pro Time Suite.

 

[superunderscore]

Thanks for your answers! I really like STOP N' GO, it's fast and clean!

 

[Rei Zanaliu]

I tried a lot of them and Stop n GO is the best

 

[mccririck]

Stop n go is brilliant, glad I read this thread.

 

[alphablue597]

I'm also using avirall time suit, looks great, but now I saw stop n go and must say WOW! It's amazing and it's free!

 

[gedzum]

Another who is using Avirall, mainly becuase I believe it was featured on WPCentral. I might have to check out this Stop n Go app. Don't always use a timer/stopwatch on my phone though.

 

[MKairys]

Don't overlook Jack of Time which has several useful features not found elsewhere.

 

[Trevor Wolfe]

Please everyone vote for this feature so we can have timer and stopwatch integrated in the alarms app like on windows 8. Add a timer app, stopwatch and a built in audio recorder – Feature Suggestions for Windows Phone