New AVR advice

[Falc78]

Hi, my first post here.

Having picked up a Samsung UBDM7500 this week it's time I replaced my aging Marantz SR4200; I've got this paired with Mordaunt Short MS814's, MSC20 & MSB20's and no sub. I use this for a mix of film and music.

I have been looking at the Marantz NR1609 but was wondering if it's worth spending a bit extra on the Marantz SR6012 which I've seen for £660. Are there any other AVR's I should be looking at between £400 and £660 which would be good for both film and music?
I've also thought about updating my speakers to Focal Sib Evo to get a sub and to be able to use atmos on my AVR. Would this be a good choice?

Any help would be great. Thanks

 

[Nayfne]

Funnily enough I used to have the marantz sr4200, still have it in the loft lol, then a Sony STRDN 1000, then went for an onkyo tx-nr 838 for a 5.1.2 Atmos setup. I'm not settled with the marantz sr6012 in a 5.1.4 conifiguation, it's a great piece of kit and that's a good price at £660.