When I edit photos I’m not printing, I’ll preview using a printer profile for the lab I’m using. I haven’t had a gamut issues with a decent sRGB monitor. Creative pros sending work out to clients typically save to sRGB anyway for compatibility.
P3 is half way between sRGB and the Adobe/ProPhoto space - it’s better, and it’s pretty useful when dealing with certain images that would have lots of out of gamut range colors, most especially when you’re printing (often expensively) at home. So if you print a lot at home it’s probably worth the expense - though honestly if you’re really serious about a calibrated high-quality screen you’re better off looking at something like an Eizo ColorEdge, NEC MultiSync or factory-calibrated BenQ monitor, plus a hardware calibration unit (maybe more important than wider gamut for photo printing - I personally recommend the X-Rite i1Display Pro) if it doesn’t come with the monitor.
Right now I use a 27" iMac and I don’t want to put another monitor next to it. I get good results with it, plus calibration unit, plus my Canon photo printer.
I’m not looking at photography as a primary use - I’m just a hobbyist - I’m looking for an all purpose monitor with good colour reproduction.
My question was more along the lines of whether going 4K is worth the extra over QHD. I connect to a cheap and cheerful Dell 24" 1080p monitor at work but the lack of sharpness and resolution is noticeable when compared with the screen on my MBP.
I might say that buying the best monitor that you can afford right now is always the best choice right now.
IIRC, I chose my 25" at QHD because of the noticeable improvement in resolution over a cheaper 25" at HD (my MBP will not drive a 4K). I absolutely appreciate this choice every day that I use the monitor. IIRC, I also realized the break point to go to 4K would likely be at 27". Better said, the break point to forget about resolutions at or below QHD is with a monitor size of 27". Finally, somewhere, you should be able to find out how to determine the pixel/inch values and do a cross comparison. By this I mean, the resolution of a 1080p at 24" is equivalent to a QHD at X inches is equivalent to a 4K at Y inches. You might want to calculate whether either X or Y is smaller than 27". So, depending on how close X is to 27", you will end up with a monitor that is just fractionally better in resolution than the 1080p you find so difficult.
Just for fun, I did a search and found this page compares images at different gamut values.
After reviewing this Website, as a non-professional hobby photographer, I’d be hard pressed to push for me to buy the less expensive higher gamut lower resolution monitor over the lower gamut higher resolution one when I could afford either one. Otherwise, I’d take the notes from @bowline about true photo-editing quality monitors to heart.
Even a hobby photographer should probably consider (eventually) factoring into the budget a colorimeter to calibrate the monitor, if they print at home. Bang for the buck is probably the $150 Colormunki (decent review here). But since monitors belonging to most people looking at photos are usually all uncalibrated, if you’re just sharing pics online the need for calibration is significantly reduced, possibly even unneeded.
Monitors tend to last a long time and since it would be your main interface with your MBP at home it’s not something you probably want to skimp on. I am unfamiliar with the specific models listed but I’ve owned a couple of Dell monitors in the last decade and liked them.
The Dell UltraSharp U2719DC is a better option than the S2719DC as a) it has a higher power delivery over USB-C, and b) it has a VESA mount rather than a built-in stand, and is more or less the same price as the LG, circa £500.
I’ve had several friends recommend both Dell and LG. A guy at work has an LG 34" ultrawide at home which he uses with a MPB and rates it very highly.
I’m going to be working from home two days a week for the foreseeable future so having a decent screen is going to be quite important if I’m going to be staring at for 8+ hours a day.
Given my photography hobby, if I had $1000 to throw around I’d probably look at something like this 27" 4K BenQ monitor, discussed below by Keith Cooper of NorthLight Images. (Keith is an awesome resource on all things involving printing photos off computers, with soem excellent tips, tricks and product reviews.)