I can save you one week from that, obviously this is just my subjective opinion, so take that with a grain of salt and I still encourage you to try out yourself.
First, about the exterior:
| Philips SHP9500 | Philips Fidelio X2 (Woox) |---------------|------------------------- Price I paid | $46 | $165 Packaging | Pretty much your standard plastic cardboard box | Same Accessories | Standard 3.5mm stock cable + 1/4 Adapter | Nylon sleeve stock cable + 1/4 Adapter Build + Aesthetics | Plasticky mainly but sturdy enough. Overall decent-looking. Huge and shallow pads, the material of the pads are like dirt magnet and can become grossing overtime | Combination of metal and leather in the most part gives a long-lasting vibe and quite appeal-looking. The pads are big enough, but getting warm easily Hot-swap pads | No! Either you carefully remove the pads or permanently remove them out of the earcups with all that glue. | Yes! However, there are reports that some batches of X2 come with glue pads, so you need to forcely remove it, not too difficult really.
Second, about sound quality:
| Philips SHP9500 | Philips Fidelio X2 |---------------|------------------ Soundstage | As much as you would expect from an open headphone, I would say it's okayish. | A little bigger than SHP9500, not as gigantic as my AKG K7XX. Bass | I would call this an anemic bass headphone. It's severely lacking, especially when it reaches deeper in the low-end. | Definitely more bass quantity compared to its brother, and it reaches better too. Clarity | Even though this is not a heavy-detail retrieval headphone by any mean, I prefer this one over X2. It sounds clearer to me. | <--- Not by any means X2 does a bad job at this aspect, but the warm nature of X2 gives me somewhat muffled in certain situations. Vocals | I find it somewhat artificial compared to my Audio Technica AD-900X. That's being said, it still does a decent job at this. | Sounds more natural compared to SHP9500, but sometimes the bass can bleed in and make it sound quite strange.
Overall, both are arguably enjoyable cans for casual listening. For their price, you can do much worse!