I personally avoid Celerons like the plague. Mainly due to the fact that historically, they have been a cheap pile of crap that bottlenecked the system. Kind of like a cork in a bottle.
Yes, as @scottalanmiller stated, that's not so much of an issue today but I still can't bring myself to consider them because of how bad they used to be.
To me, they still seem like 3-4 year old tech picked up at a $2 shop, repackaged & sold as new.