C'mon, just 2 posts above yours user posted at least several alternatives to Bestchange. So, it's not right to say that there is no alternatives, offcourse, question how good they are. I also would suggest to use Bestchange, but if OP need alternative, probably there is reason behind it.
Yes, I know and OP will probably see that but to be honest, the reason why I said no is that OP is looking for a trusted site:
As indicated in the header, I am looking for a trusted site where I can choose the best exchange rates and the best exchanger for myself.
@LTU_btc
Do we know a website similar to Bestchange that's trusted? No. That's why I wrote no. One of the user from those two said above:
note: This is not my direct recommendation for using these services, it is just a simple list of similar monitoring services.
But I like what @Pmalek shared.