Now there is some unvarnished truth interjected into a rather overblown (at times) discussion. Not being a SR user, I will refrain from strongly disputing their claim that they can get better results than they can with a DE because I can't (although many who use both SR and DE do). However, I am highly suspect. I think this gets to the heart of the matter.
Analogy: I'm an avid shooter, and I reload my own ammunition for virtually everything I shoot. I enjoy the ballistic research, the measuring with chronographs, the tedious development of a particular recipe for a round, especially for a particular firearm. It's a love for that part of the process that led me to make all my own ammo. I don't criticize those who shoot and do not reload their own ammo. They may not get the enjoyment I get from all this. I consider reloading a rewarding activity in and of itself. Many of them are very superior shooters who compete and would rather spend their time honing their technique using off-the-shelf match ammo. Not better or worse. They are still great shooters. Likewise, experienced DE shavers are still great shavers.
That experienced SR shavers can get close shaves is indisputable. That they get closer or longer-lasting shaves than an experienced DE user is highly suspect in my mind. Enjoy your activity! Just don't make over-hyped claims for it.
I'm personally dubious of any claim that a shave with one type of razor lasts longer than another type simply because of the type of razor.
There are certainly extenuating conditions which might make this true due to proper or improper application of the razor type, but it isn't the blade itself that makes the difference.
When it is all said and done, you can cut hair off at the surface or just below the surface with the correct use of any razor - so a shave "lasting longer" with one type seems off to me. JMHO
If I am a regular cart user, and not an experienced DE or straight user, my shave would be best and closest with a cart.
Likewise for regular and experienced users of all other razor types.