Just get the MHD unlocker. It's not far off from the price a local shop would charge for a bench unlock and you never have to worry about getting it unlocked again in the future if needed.
I removed Sport + a long time ago after going MHD.
Never had any issues with it but there's debate on its effectiveness and if it's safe to use it, especially on tuned cars.
I think the price point on the Vlands is due to the fact they have been around and are well established in the industry. They've been around for years and due to the volume of their business, they can offer lower prices. I bet the quality is equal to anything else out there.
I'm very interested in this. Would love to see how this performs with MHD Stage 2 Flex. This might be what I'm looking for to add some efficiency for a reliable 550ish whp without the expense of a full turbski.