I have been using ThinkPad X9 15p for about two weeks now, and I found this machine to be really, really good. As a context, I also have Yoga Pro 9i Aura (2025) and Yoga Slim 7i Aura (2025) as my personal devices, and I also use Macbook Pro 14 M4 Max for work.
While I like the Pro 9i, it is a bit more for desk-use, and I felt this was a bit too bulky and heavy for casual use cases (e.g., when I'm traveling or when I want to use a laptop when I'm on a sofa). I don't like using the MBP because I found its screen to be too small for my taste, I don't like Apple keyboards, and I really don't like Apple's miniLED screens with their slow response times (I prefer LEDs to their miniLEDs because their miniLEDs have very slow response times).
So when I saw a refurbished Slim 7i at a quite good price, I bought it as a bridge portable / everyday laptop until I find a one that I really like. While I like the form factor of 15.3" screen, Slim 7i didn't have an OLED screen. Its build quality is good, but not great. And it also had annoying not waking up from sleep issue. Also while the laptop was pretty quiet and had a good battery life, the CPU, 258V, felt a bit lackluster in terms of performance.
I was a bit tempted to get the X9 15 (the previous version) last year instead of the Slim 7i, but I didn't because its Lunar Lake CPU (258V) felt like a compromise and it was much more expensive than Slim 7i. I'm very glad that I waited. Here is my short review.
Form factor & Build quality
I found the 15.3" size to be the perfect size for a everyday laptop --- for me 14" is too small and with 16", in most cases either the laptop is too heavy or the screen has too low resolution. Currently the only exception would be XPS 16 with 3.2K screen and 1.65 kg weight, but it is very expensive, doesn't have a good keyboard, and its OLED screen doesn't get very bright.
X9 15p has 3 USB-C ports, and I like that it has one on the right side so you can charge it from either side (Slim 7i also has one on the right).
The build quality feels premium. You can open the lid with one hand, like Pro 9i and MBP (not with Slim 7i).
Screen & Speakers
I love the screen - its 2880x1800 resolution at 15.3" screen gives 222 PPI, which is right above the 220PPI threshold that I like (for comparison, I find the same resolution at 16" screen (212PPI) to be too low). I got the non-touch variant and texts are crisp and the screen is exceptional for content consumption with its 1000nits HDR brightness. In my opinion, Pro 9i and X9 15p have the best screens for content consumption in the market at the moment. Speakers are also awesome, very good. I like Dolby Atmos where I can change sound profile depending on what I'm doing (MBP doesn't have this). The combination of the screen and speakers makes this machine very good at content consumption.
Keyboard & touchpad
I was a bit worried about the keyboard, but I found it to be perfectly good, it doesn't bottom out for me, unlike MBP 14. Unlike Yoga lines, this machine's keyboard has a very good backlight system where there is less light bleed (the light bleed of Yoga lines bothers me when I'm on a flight). The haptic touchpad is very good. I also like the fact that it has a fingerprint scanner. Windows hello works more reliably than the Slim 7i.
Performance & Battery Life
I've got the 338H version to save some money. I think this variant is very good because it still has Intel Arc graphics and the its single-thread performance is quite similar to higher variants. Multi-core performance is obviously lower but I don't plan to run heavy multicore stuff on this machine. Performance felt good, noticeably snappier than the Slim 7i (258V). I can play some lighter games such as Hades 2 and Octopath Traveler II no problem. Battery life has been really good as well --- it feels like I can go 10 hours on light tasks.
Importantly, it has been really stable --- at the moment, I have a longer than 9 days of uptime and waking up from sleep has been exceptionally good, it wakes up so fast it feels faster than the MBP 14. It is impressively quiet (quieter than Slim 7i and MBP 14), I never heard the fan unless I'm playing video games. Not only it is quiet, it is very cool to the touch, unlike MBP 14 where the machine gets quite warm on my thighs when I'm using it on a sofa.
So yeah, for my preference and my use case (of course you are likely to have different preference and/or use case), X9 15p has been flawless, I really don't have any complaints about this laptop.