LCDH in Mexico can be trusted in my opinion. I don't buy from Mexico personally but I know a fake when I see one and I can guarantee it is or not when I smoke one. Just look at the wrapper and that tells you 75% of whether it is fake or not. Cuban cigars have generally the same uniform characteristics when examining the wrappers. They are usually tan colored (mostly), are thin and delicate, have hardly any veins (the veins sometimes look like they were sutured they are so fine), and the wrappers usually have a barnyard smell to them.
The website above should also show u what a box should look like and what it should have in it. Everything about a cuban cigars boxing, presentation, labels, and stickers are meticulously checked and should be perfect with hardly a single flaw.