An early-2008 intel is my daily driver.
As
@eyoungren said, using intel-Macs doesn't mean to abandon PPC, but some stuff, like video-streaming and fast web do not work the same or not at all on a PPC-Book.
My personal experience is, that the "early" early-intels are more rare to find (spare parts as well) and somehow more worn out. So I'd rather go for an early-2008 15/17" MBP unless you want the earlier ones as a collectors item...
Well, the early intels can't run Tiger/Classic, but currently they can cope with a lot (and only 4k-video and kind of that stuff makes them look old). Dual-Boot Leopard plus newer (up to Mojave-Patch) is a great option.
(Even if Catalina might be possible, for me it's currently a no-go, since I don't want to loose all my favorite 32-bit-Apps, HFS+ and connectivity to PPC/Leopard).
About Office'08 (there already have been a lot of votes about that): it is great to see it working on both PPC(Tiger/Leopard) and Mojave-Patch and every other OSX in between. You may really call it a killer-App!
And there's a bunch of other nice programs, that I do enjoy on all pre-Catalina-macOSs.
About the hardware of the early-intels:
- they do have a great display! (I like it more, than the glossy version on the later books)
- they all have a crappy GPU (unless you are lucky to find an "emerald-book" sporting a green-dot on the RAM-bench, that indicates a refurbished unit - or unless you've got a model with a new GPU, like
@dosdude1 recommends)
- they have FW400/800 and optional USB3.0 (by USB3.0 PCExpressCard)
And the next-best after the early-intels (if you don't want to be a victim of a faulty GPU) are all the Core2Duo starting with and beyond late-2008.
And if you should ever reach the end of your wits: Apple is offering you recycling for free ...
(but before that will happen and whenever my last early-2008 MBP is going to fail I'm gonna ask
@dosdude1 for repairing aid ... )