How important for surrounds to match fronts?

I think that matching all speakers and timber matching is critical to the home theatre experience. I do think that when creating a home theatre like the movie experience the only way is with horn drivers-like the theaters have. The heart pounding dynamics are only created with a full horn loaded speaker. Plus subwoofers to add those last octaves. Take a look at Casta Acoustics and see what I am speaking of. Custom horns are simply amazing. You will not need another speaker.........

My opinion, if you want to achieve the movie experience like/better than the theatres in your home in a medium to large space to work with, you will need horns and the less crossover and calibration the better as it is all filtering holding back dynamics and natural quality. If speakers are chosen correctly, crossovers and calibration will be minimal. Identical speakers/drivers are best for timber matching across the range. Dipole speakers beside or behind listening position or both are beneficial to surround duty. Carpet or cork is good for flooring and paneling behind front speakers on wall and in back corners work extremely well. A suitable sub(s) are the icing on the system for low bass duties. Placement is critical with sub(s) as to smoothen out the low end. In the end if this achieved, everyone will come to your house for movies instead of paying and waiting at the local theatre. Enjoy and cheers!!