The 970HD may actually prove to be a better player than the Bravo D1 - it doesn't use the 971H's Faroudja chip, but it is still a pretty respectable upscaling player and the D1 is a couple generations old now. Of course, with component output being the best connection offered by your display, that changes matters somewhat, but there's also a hacked version of the 970HD firmware available "out there" (linked numerous times in the AVS 970HD Brain Dump thread) that allows for 720p and 1080i output over component. It's not the latest version of the firmware, but it's fairly recent.

I do have a Yamaha for DVD-A and SACD (which I also use for CD's just to keep it busy, since my DVD-A/SACD library is pretty small) as well as an Oppo for DVD watching, but I am actually looking closely at Oppo's upcoming 981HD (not yet officially announced but discussed in some detail at AVS and expected out possibly as soon as this week) to replace both. Video performance would be basically identical to the 971H, but it would offer DVD-Audio and SACD to boot. It won't have a component video output at all, so it wouldn't be a good fit for your case anyway, but I'm probably going to try one out to see if the DVD-A/SACD performance is good enough to justify letting the Yamaha S1500 go.

The SMS-1 and those three subs should be a pretty potent low frequency mix, Nalod. It sounds like you are just getting ready to pull the trigger on it, so I'll offer one bit of advise: download and read Outlaw's Guide. The SMS-1 is a really nifty tool, but it's complex and not at all your typical home theater gadget - getting that guide in hand will help untangle much of the confusion that would otherwise get in the way.

Oh, and welcome to the saloon!