Thinking about selling my MacBook Pro for a Galaxy Book4 Ultra...
I sold my MacBook Air for a GalaxyBook 4 Pro 360.
I would say a couple things. The GB4P360 is a great laptop and the screen is simply the best on any laptop right now.
The speakers are greatly improved over past generations but you still need to adjust settings, eq, and turn on Dolby atmos. BUT compared to the MBP that is one area the MBP sounds better. Both are good with rich bass and decent volume but the bass is better on the MBP.
I don't know about you but battery life on the M series MBP I had was nowhere near what Apple claims. I think I was getting around 9-14 hours sot.
The GB4P 360 gets me about 8-10 on average and sometimes closer to 11. But I have screen brightness all the way up, high performance mode in windows and Samsung settings.
If you like Apple's tapered design before the boxy redesigns then you should like the GB. Reminds me a lot of an older MBP. The build quality is very good and feels solid even though it is so light. Honestly, I had the 16" m1 Max MBP and it was so heavy and awkward as a laptop other than sitting on a desk I started to use it less and less because I was afraid I would damage it. It would slide if it wasn't on a flat surface because it was so heavy and overall despite the extra ports, great build quality, and all the rest I sold it for an M2 MBA. If the 16" MPB was as light as the GalaxyBook 4 Pro 360 I might have kept it. I really can't stress enough how great it is to have a decently powerful yet very thin and light large laptop. As much as I didn't like the sacrifices in Ives's design's I have to admit they were iconic and well made. There is something to having a powerful yet thin and light laptop. Samsung has really made a great design. The moonstone grey looks great while not showing fingerprints which is a first for Samsung laptops!
Overall it is probably the best Windows laptop on the market if you can afford it. I personally don't need the RTX GPU so the Pro works for me.
With the Ultra using dedicated Nvidia GPU it can affect battery life under load by a huge factor.
I don't know your timing. Do you want to do this soon or at some point? I ask because later this year Samsung should be releasing a GalaxyBook 5 with Intel arrowlake which should be on par with M3. Also in June there will be a Qualcomm Elite version of the GalaxyBook 4 released so there is a lot of good stuff coming up. I think the Qualcomm is for sure in summer while Arrow lake laptops might be announced in December and actually sent out in January??