Hi Rusty! Good question. Damn hard question to answer too. Really, it all depends on what sound or feel one is going for, and moreover how much you're willing to suffer moving... and then there's the cost
It seems Phil is pretty much embracing the modern stuff now, but his rig isn't really the scale I think you're asking about. One of my former girlfriends once said to me "any thing worth doing is worth overdoing" lol. I think Phil might have a similar thought process when it comes to his rig.
The modern stuff is a different canvas, entirely. The idea being if you have a transparent reproduction system (amps & speakers), then the rest of the coloration (the artistic sound sculpting, or personality) can be performed entirely in DSP. Granted there are those who are of the analog purist mindset (and I don't totally disagree with them - there's something to be said for authenticity), but I will say digital (when properly done) can be nearly impossible to distinguish from exceptional analog processing. Beyond that, digital can do things which are simply impossible to do with analog. That said, the real wins realized by going digital are: absolute repeatability of settings, environmental consistency, flexible remote control options, and vastly reduced hardware footprint and maintenance. So if you have the Phil buck$ to $pend, I'd say it's an exciting new world opening up. As I'm sure it's painfully obvious I've swallowed the Meyer koolaid and come back for seconds. So yeah, a bit of bias here.
So what would I put together for a small to medium bar bass rig? That really depends on tons of factors, not the least of which is what type of sound I was really after. One can attempt to make a silk-like purse out of a sow's ear, but it's going to require tons of attention and will inherently have a very finicky character. It comes down to the old saying: affordability, flexibility, quality. Choose any two at the expense of one.
If I had the budget or good fortune, and was looking for a clean Phil-like sound, I'd consider going with a mini version of his setup. I'd try to find a digital preamp I liked. Based on those July pictures, he seems to be using a Rocktron Blue Thunder, which I think sells for around the $300 - $450 range, maybe less if bought used. I was rather surprised to see him using something so seemingly "off the shelf", anyone know if he likes it? Maybe he has had some hardware hotrodding done to it, or special DSP algorithms programmed in there for all I know. Another less expensive pre option might be the Behringer LX1B-PRO which is around $200. I honestly don't know much about either of them, haven't ever even touched one. Anyone have any experience with either to give them a thumbs up or down? They both offer the promise of modern DSP. Given one of these pres, I'd drive some small Meyer self powered speakers with the line out. You don't have to go overboard with the speakers, 2 cabinets would work. Perhaps a used UPM-1P and a UMS-1P. If you're very lucky or very skilled you could likely assemble such a rig for under $2.5k. Yikes it is a lot of money, but they are truly fabulous speakers with uncompromising design. Another alternative would be forget Meyer and get similar self-powered offerings from from QSC, JBL, EV, EAW, etc. for a more budget system. Most manufacturers offer variations on the theme, but of course the devil is in the details. To get truly coherent & linear sound you have to have gear which incorporates the proper electronics and physics.
On the flip side, far from all the bells and whistles of unlimited-budget modern technology, I love the basic sound of something like a P Bass into one of those old 80s GK heads and some well designed/sized cabinets. Sometimes simple just kicks ass in all the right ways.
Basically it's like food. You can dine on Filet Mignon and Lobster Tail for every meal and live in bliss, but sometimes a slice of pizza, a great burger, or a beer and a burrito just hits the spot! There are so many good things to eat, and so many flavors: Indian, Chinese, Thai, Italian, Mexican, French... the list is endless, just like with sound gear! Hang on to your wallet
Sorry, I don't think I _really_ answered your question at all, did I?