I use valvoline synpower since my 2nd oil change..
Not that i dont like mobil 1, the brand of most synthetic oil user will go to, but i just wanna switch brand after using mobil 1 for 60K miles times two cars
My dad is a big fan of valvoline, so i guess i give its synthetic product line a try. So far, not bad: smooth ride , gain 1 or 2 mpg, a bit more response etc. Exactly the same feeling i get when i use mobil1.
This maybe plasebo, so i might be bias.
But i do not sense any 'degradation' to the ride if you switch to synthetic early.