For some effects type, analogue makes a different sound to digital. Some digital devices do an amazing job at emulating an analogue device but that's not the norm and kind of puts a spanner in the works of an analogue vs digital discussion. No one has yet made a digital octaver that sounds anything like a good analogue octaver (like an OC-2). But the Iron Ether Xerograph deluxe and Source Audio Manta to a lesser degree sound more analogue and most analogue filters. Dirt wise, generally analogue is better...but the Source Audio Aftershock / OFD are excellent examples of digital dirt emulators and they are both excellent.
A pair of Eventide H9's will cover pretty much anything you want (except analogue octaver) while being relatively small and fairly light....but not cheap.
A Boss MS-3 can cover 90% of anyone's effects needs and has three loops for a few more too. So there's lots of options these days. A great one box solution is a Line 6 helix....or a one box solution including a class D amp head is a Kemper profiler...assuming you have very deep pockets.
But...back to the OP's original question...if I was in your shoes...a Boss OC-2 would be top or close to top of my list. Maybe a Cog T16 or 3 Leaf offering. Personally, I use a MXR BOD and I really like it. But I also have a EHX Hog2 and a pair of H9's to do the digital / harmoniser stuff.