I say just buy from your LDS alot will price match if they know you will be a regular or they will drop to a price slightly worse than online. I can take in any scubatoys, leisurepro, diverssupply add and 9/10 times my LDS will match, plus I know they service the product and I know it contributes to them sticking around longer.
I also forgot you also get to check the merch to know its a yoke instead of din reg, that your wetsuit is the right color and not red (i dont know why but i hate red on wetsuits) and you dont have to wait for it.
I don't disagree with using an LDS IF you have a decent one. But if you don't live in a big diving area, you are often limited to one LDS and they may only carry one manufacturer. So unless you want their manufacturer you can't shop there.
I just recently bought some lawn equipment and went with the mom and pop store over the Big box stores. Both were dead even on price. The mom and pop threw in supplies and I know if I have an issue it will get resolved as they service what they sell. If I bought at HD I could get the same brand model and if I needed repairs I would go to mom and pop as they are the authorized repair center. Who do you think goes to the head of the line for service. LDSs will do the same and rightly so.