Do Mono Block amps provide better sound ??

Short answer, no - it depends on the amp.
I have Clayton Class A monos and a McCormack DNA-2 LAE that was upgraded to the fullest extent possible by Steve McCormack in 2014.  Both do 300/600 wpc into 8/4 ohms, and both sound very good, but a little different, and the power supplies are not the main reason for the differences, IMO.  Both sound better to me than the Ncore NC1200 monos I owned and compared directly against.
Choose your amp based on what sounds good to you, with your speakers, and consider the ergonomics, but maybe not as importantly as how the amps sound.  Only you can make those choices but I would not rule out either mono, or stereo, amps.
If all else were equal, which it never is, I would opt for monos for the reasons stated previously in his thread, but they would have to be very good monos to beat my McCormack, or a CJ 350, or any number of really good stereo amps out there, and the sound would have to suit my tastes and my speakers.

tango

I actually preferred the Sanders Magtech stereo to the Merrill Veritas monos.

A better question to ask is for a given manufacturer, is a pair of their monoblocks better than their equivalent stereo amp. The answer would be yes but at usually much higher cost.

Good question. I have a pair of Martin Logan Summit X's. I tried a McIntosh MC2255 on them, followed by a Mark Levinson 532h, and then a pair of Sanders Monoblock Magtech amps. I liked the Magtech monoblocks the best. Reading the Sanders site and his white papers, the Magtech was designed for use for electrostatic speakers. 

Ok, scenario:

two systems, same speakers (energy rc-70's)
 
McCormack DNA-750's upstairs, Yamaha CD player, sanders preamp

basement: carver 600 sig, b&k pro 10 mc (newer looking one), some old Sherwood 6cd changer.


the monos sound better after being on for over 24 hrs,

carver is absolutely no lsouch by by any means. But when it comes to peaks, and drum solos, I feel the carver has a little more oomph to keep the depth and in your face sound right there, the mccormack's are better at detail and decay, hidden vocals, fadout sounds.  They each have their flaws, and extraordinary attributes. 

In the end, and yes I have mix and switched gear all the time. But the upstairs has a 18 foot vaulted ceiling,making it harder for the little rc-70's to fill the room, while basement has absorbing ceiling tiles, about 8.5 feet, so the sound is more vivid in basement than upstairs.  due to the area size. 

Too many variables to say to say what is best. Use your ears to be sure. 

Mono's have been the rich mans audio, for bragging rights. 
Nothing wrongwithanicekiller stereo amp, there are a shite load of them   

Happy hunting