When it comes to 4k blu-ray players, two popular options that often come up in discussions are the LG UBK90 and the Sony UBP-X700. Both of these devices are designed to provide an exceptional viewing experience, but they have some key differences that set them apart.

Firstly, let's take a look at the LG UBK90. This 4k blu-ray player is known for its impressive picture quality, with support for HDR10 and Dolby Vision. It also features built-in Wi-Fi and Ethernet connectivity, allowing users to stream content from popular services like Netflix and Amazon Prime Video. The UBK90 also has a sleek and compact design, making it easy to fit into any home entertainment setup.

On the other hand, we have the Sony UBP-X700. This 4k blu-ray player is also equipped with HDR10 and Dolby Vision support, as well as built-in Wi-Fi and Ethernet connectivity. However, one key difference between the two devices is the X700's ability to play back a wider range of audio formats, including DSD and ALAC. Additionally, the X700 has a more comprehensive set of streaming apps, including Sony's own Bravia Core service.

In terms of performance, both devices are capable of delivering stunning 4k video quality with excellent color accuracy and contrast. However, some users have reported that the LG UBK90 can be slightly slower to load discs compared to the Sony UBP-X700. On the other hand, the X700's more complex menu system can make it slightly more difficult to navigate for some users.

Another key difference between the two devices is their price point. The LG UBK90 is generally priced lower than the Sony UBP-X700, making it a more affordable option for those looking to upgrade their home entertainment setup without breaking the bank.

Ultimately, the choice between the LG UBK90 and the Sony UBP-X700 will depend on your individual needs and preferences. If you're looking for a more affordable 4k blu-ray player with excellent picture quality and a simple menu system, the UBK90 may be the better choice. However, if you're willing to pay a bit more for a device with more advanced audio capabilities and a wider range of streaming apps, the X700 is definitely worth considering.

In conclusion, both the LG UBK90 and the Sony UBP-X700 are excellent 4k blu-ray players that offer stunning picture quality and a range of features to enhance your viewing experience. While they have some key differences in terms of performance, design, and price point, both devices are well-suited for anyone looking to upgrade their home entertainment setup with a high-quality 4k blu-ray player.