Yeah... struggling with same issues.
R1 = Quality? Durable off-road? However, proven kit fitment, with great options, good customer service, good references here on the forum, great and knowledgable distributor (Freedom MotorSports) but more than just a road-centric solution and great looks?
Alcon = Quality, but built for an application and wheel size that is not a good fit for me. Especially at that price. Required extra tie rod kit only adds more $$ to an already pricey kit.
Wilwood = Quality for sure, solid history and experience in truck applications. But poor commitment by the company to fitment. I believe this solution can be "made to fit" (others have clearly done it with good results). Just expecting some additional labor hours at the shop and additional parts required (new rear line fittings, longer front lines, possible front tie rod kit needed) to get things to work. Erodes their value price and any plug and play expectation and puts them at a total price equal with the others.
RB = unknown & unproven on trucks more or less Raptor, but with cool tech and a promising solution/story that has the potential to address a real need (bigger wheel, hybrid on-road/off-road, solid build). Note: Still have not see pricing yet from them to see how viable they may actually be
Brembo = All good if you have $9k to drop.