Got Head Hunted!!

The last time this happen to me was about 8 years ago... and even then the offer was not as good as this one.. I am really glad becoz at least my work is recognized in my circle of industry. And it is the record time i have ever heard on a job offer... I went to the interview at 10am...i got a call from HR at 12am to check on some of my details...At 4 pm, i got the job offer... All in a period of 6 hours... Wow!! Even I am surprised... But still i am very glad it happen... I hope it will open new levels of the corporate ladder for me to move. But i am still confused if i should take up the job offer becoz i have been with my people now for 7 years plus already..They are almost family to me...i was already crying when i ask my manager of his opinion of the job offer, well for those who are surprised, i am very close with my manager.. We are like good friends, in fact very good friends..If i choose to stay, it will definately be becoz of them...my colleauges... I have the weekend to think about it...They want my answer by Monday...Actually they even wanted me to sign immediately.