I personally don’t like SFX-L, as to me it’s just the awkward middle child of PSUs but a few of them are cost effective and I can see why people would purchase them as SFX PSUs are pricey. Although, I can say a SFX-L psu would be challenging to put in as well as a 2.5in drive but it can be done! Cable managing would be hell though. Better and quieter? The SF600 with a Noctua fan mod. And maybe some custom cables also.