It's quite difficult to pick up a good and reliable exchange but I'll try. To me, it's Changelly Pro. Can't tell you why. I just registered there and don't want to move on searching for another platform.
I don't know about changelly pro but from my past experience I have used them to swap my coins and it was a very easy process as we send coins and they send us the desire coins after cutting a small fees, also another good one I used is changenow but have changelly built their own exchange now? That would be a nice news and I will check it now.
By the way I use Binance and they do not give me any reason to leave them and visit another exchange because they have even added P2P market where I can buy coins with my local currency in fiat and really I don't have to use localbitcoins anymore now which is a great news because LBC was great but it is best to have a single platform for all use.