Define "much better" and from what do you base that on? One notable AVS member will jump in soon verify Yamaha's infamous reliability, yet no one has any actual independent data. It's like saying Samsung TVs are more reliable than Vizos, then you look at the margin of error for the sample and there really is no statistical difference - see Consumer Reports. Seriously folks, how often do you have receivers fail to a degree that warrants not buying a particular brand for reliability because there is some major manufacturing glitch/design flaw - see Onkyo HDMI board failure as one of the few real "possible" examples. Using a refurb as a measuring stick for reliability is a great test
I have owned just about every brand of receiver (separates when I first started - amp/tuner) made since I started buying av equipment 40 years ago. The only failure I had was with a few Onkyo products (606 and 705) which occurred after their warranties had expired. Eventually that was addressed by Onkyo for some of models - see sticky thread. Buy the brand that best fits your needs financially and has the features you need, more importantly buy it from someone who will be easy to deal with should you be unlucky enough to have an issue meriting replacement (especially when getting a refurb of any product), in other words the seller has a solid reputation for standing behind the products they sell and doesn't push you off on dealing with a warranty claim via the manufacturer after just getting your av product.
Don't focus on what brand may offer a 1% improvement in reliability. As mentioned above make sure you do business with with a quality, well respected ID retailer (Crutchfeld, Amazon, AV Science, etc), local av retailer or a professional installer who will swap out the defective unit quickly. Warranties and/or no questions asked return policies exist for a reason since most issues (real or not) pop up soon after purchase with any product, the key is making sure those that those who offer them follow through on their promises
Now, back to the "much improved" thread discussing of brand reliability based on refurbs, open boxed items, used, new, etc. Apologies for the sarcasm.