Sony BDP-S350 now or S550 Later?

[Mirage]

I'm currently running an Onkyo TX-SR803 A/V receiver in my system at home, with a Sony KDS-50A2000, 7.1 JBL speaker setup and a Sony DVP-NS75H DVD player. I want very much to add Blu-Ray capability to my system, and have just about decided to buy the Sony BDP-S350.

However, I'm concerned about not being able to access DTS-HD MA since neither the S350 nor my receiver will decode it - I'm dependent on the player to decode all the new audio formats.

I've looked at replacing the receiver with something like the TX-SR805 or the newer 806 (this is my second Onkyo receiver, and I've had great luck with both), but the cost is not trivial and my current receiver is barely two years old.

If I wait for the BDP-S550, it looks like all the decoding will be onboard that receiver, but I'll be missing out on Blu-Ray capability for months to come (and I've already started acquiring a collection of BDs).

Would very much appreciate recommendations or work-arounds. Being without Blu-Ray is just not working well.