Two days and $4k later, I am mostly pretty stoked about my Mac Studio desktop + monitor purchase. But I do think it is a disservice to consumers that there is still no M1 Pro desktop, which may have been my sweet spot. And I was expecting to spend at least $1k less on my next computer.
I've been using a late 2012 27" iMac that was pretty high-spec'd at the time of purchase. I'd say that I've been holding out for an Apple silicon desktop for about two years now, ever since my Fusion drive hit capacity and may have developed some bad sectors. I'm a pretty heavy Logic user and I started getting a lot of overload errors. So I have been hosting my entire system on an external NVMe drive for awhile now--it greatly alleviated my problems though projects still take a lot longer to load than they used to. Side note, I plan to keep using that drive to host files and the internal drive for system/software. Other than than those small issues, Logic performance has held up pretty well--I can still run a lot of tracks and plugins and rarely need to freeze or bounce anything. I also started having a lot of bluetooth issues awhile ago and had to switch back to wired headphones, and probably the biggest issue with my iMac is that more often than not it doesn't shut down properly and I have to do a hard shutdown. It also doesn't boot up as fast as it used to. It's also worth mentioning that the whole time I was looking very forward to updated Thunderbolt/USB bandwidth.
In the end, though, I'd say that iMac worked out pretty great for nine years! Well worth what I paid minus the whopping $110 I expect to get back in trade. It was more than enough for music production, but that probably future proofed the machine to some extent and made me feel more comfortable using a lot of native plugins, whereas on my first 21" iMac I was relying more heavily on SHARC accelerators. That said, I probably would have replaced the 27" a couple of years ago but for the impending transition to Apple silicon.
Most of last year I was anticipating that my next computer would be whatever enhanced iteration of the 24" M1 iMacs came to market. But when the rumor mill began predicting that the Mini would be the first M1 Pro desktop I began warming up to that idea. I was figuring I might wind up with an M1 Pro Mini and a decent 27" 4k monitor for less than $2k--significantly less than I paid for my iMac, which was maybe around $2,700 with AppleCare (which I never used). Later, I started looking more closely at displays, and I was a little bummed that getting something as nice as the iMac display was probably not going to happen. OTOH, I loved the idea of going with a VESA mounted display. But I was starting to think maaaaybe I should splurge for the LG Ultrafine.
So by Tuesday morning I was teeming with pent up demand and very quickly made the decision to suck it up and buy the Studio with the baseline Max processor and 1TB of storage. I balked at the $1,600 Studio display at first, but within a couple of hours changed my mind and ordered it. And honestly, I think it will be worth it compared to what else is available. I definitely appreciate the build quality and have always loved my iMac display. The speaker array I would love to delete and save money on. I'm sure it's great for what it is, but it won't hold a candle to my studio monitors. I simply don't need built in speakers. I LOVE that I will be able to VESA mount it even though the Ergotron LX I ordered adds yet another $200 to the system price. I think the Studio display is easily worth $300 more than the Ultrafine.
So that leaves me with a computer I'm very excited to fire up, but may have paid an extra $600 or so for compared to what I really felt I needed which was an M1 Pro chip, and I paid about double compared to what I was generally expecting to over the past year or so. But hey--maybe I'm better off for it. If I get 7+ years out of the machine I think I'll be happy in the end. I've also started dabbling a bit in DaVinci Resolve, and who knows, maybe I'll find myself scaling up my use cases for whatever reason in coming years in ways that will benefit from the Max CPU.
Having said all that, I think it sucks that not only is there still not an M1 Pro desktop available, but we also don't know when one will be available. If I knew they'd arrive in a few more months, it would be nice to have an informed choice.