Adding on @Broadfield's point -- the comparison also isn't worth it because the true differences between the 135.4 and 425 XL don't outweigh the intangibles of Red Sea's brand. Having no experience with your product I can't give a specific personal account for quality or customer service, but the name Red Sea is very well known. I'd say the majority of reefers who are active on forums know who Red Sea is and what they sell. It isn't just about Reefer aquariums. It's about their dosing components, test kits, salt mix, pumps, filter media, and misc. other equipment. If a consumer is looking at this comparison they see "Well known, respected, and established brand... or something completely new with little information and almost no presence..." Then they look at the price -- which are the same. Then they take the next logical step and ask themselves the question "Which should I buy? From the brand new company with limited information and user experience or... the international company with 25 years of experience, hundreds of employees with a dedicated warehouse and customer support in the US, known for having great customer service, and thousands of threads and builds dedicated to one product line..." Sorry to beat a dead horse here but I'm trying to stress that the Waterbox LOOKS like a great product/company trying to claw its way into the premium line of aquarium manufactures. Focus more on building the brand by highlighting your great product, working on fleshing out the website and your information on it and drive sales by focusing on great customer support and outreach. R2R sponsorship itself isn't that appealing to me as a user. However, when a I see a sponsor/vendor who is active, regularly engaging with the community and answering questions and providing feedback it goes along way in building trust and willingness to try something out.