The seal between the tank and the pump is outstanding on the Sniper unit, I’ve had zero issues with that. Zero fuel smell, no leaking.
You can probably buy the low pressure one for less and then buy the better Walboro pump and call it a day. I think the only difference is the pump, if memory serves me (too lazy to look it up!). That unit was so easy to work with and install. I purchased the hole saw off Amazon for less than $20 and it added to my tool collection.That is good news. Thank you for sharing your experience. It just may sway my decision. I may just end up coughing up the $300 and going with the Holley in tank pump.
 Ooops, just realized that is the low pressure Holley in tank fuel pump. The higher pressure one is $370 + tax, closer to $400