Only the first generation of PS3 plays SACD. I think it depends on why you need to upgrade. If it is for sound and picture quality then I don't think it is worth spending 500 on the 93. That being said I will likely be pulling the trigger on the 95, but for slightly different reasons. As I expressed my opinion many times, the talks about upscaling are over exaggerated. To my, and other family members eyes the PS3 plays DVDs as good as my other standalone players that are outfitted with ABT, Reon, and proprietary VPs. I have been told by forum members that on a large screen (>60" I assume), the difference would be visible. I really doubt it. To me if I have a big screen like that I would stick to HD. I have absolutely no doubt that the quality of the DVD itself has much more influence on the final PQ than the quality/performance of the VP.
Now I am referring to the VPs in mid range up to date BDPs. I am not talking about those <79.99 upscaling DVD players. Yes the Oppo will get you better DVD PQ than those Walmart upscaling players.
For low cost standalong players, there are good deals on the Sony 470 as long as you can live without the 7.1 analog outs. Those late Sony models can also play SACD. That's one reason why I prefer them to the Panny models. The other reason is just price, comparable Panny models cost much more, in Canada anyway but may not be the case in the US.