If the price goes back down again to around $4000-6000, people will be able to buy whole bitcoin, I know people can buy fraction of bitcoin, but buying whole is a better deal.
Regardless of whole or a fraction, I don't think you cannot say which is better. Because at the end of the day it would still be on the peoples capacity to invest into bitcoin. Some can afford whole prices why some cant. But we just need to remember that no matter what size we can trade of fiat value into btc, it would still be a good investment in the long run.