M10 is overpriced in India for 8K.
Quality & price wise Z623 is way better than M10.
Thus my vote will go for Z623.
RMA of M10 is only 10Watt, which means you won't get the slightest feel of good bass in M10s, whereas RMS of Z623 is whopping 200Watt. It tells you the story.
@The Incinerator: M10 is not a high end speaker. It's entry level.
@ d6bmg
If you read English you will notice that no where in my post I have reffered to the M10s as Hi End!!! Why dont you read before you jump in to conclusions and post caricatures which in return can start a flame war. Be a bit more patient and civilized.
Can you define Entry level? So any entry level is bad with anothers Hi End? D6bmg things dont work that way in Audio. Edit Dont judge Audio by price and wattage . Any body will laugh and die to see you compare a Swan with a Plastic Logitech. And other than wattage theres a thing called sensitivity in speakers which defines the final output of the diaphgram.Have you heard about it? Read man....
THX is more relevant to multichannel audio and its formats. Clear?
And BTW I own a THX certified Mako and some Denons and Jamos and Technics,so I know when I make a statement. I dont loose talk.
@ OP choose Swans over Z 623.Those are two proper bookshelf speakers with a proper bass module and all of them has proper spiders and damped wooden enclosures.The tweeters of m10 are much much smoother than the Logitech. The bass section is tight precise accurate and well defined without the BOOM of the Logitech.Logitech slurrs the midrange with a boomy bass and badly done crossover slope circuitry.The m10 have proper Dome tweeter with accoustic suspension design,much better for producing Transients than normal plastic speakers taht Logitech makes,which rings at high volumes.
He has gone the wattage route over quality. THX is not the Defacto standard when it is a non issue for STEREO/2.1. THX sound is more about reflections. Bipole/Dipole etc. If multichannel then it is a different storyHe really needs read a lot lot lot more.