I think Phil Jones is quite brilliant. The amps and cabinets I've encountered, are nicely made, and sound great. I have one major issue that is a total deal breaker for me. There really is no other way to put it other than, small speakers, small sound, bigger speakers, bigger sound. I played through a friend's very expensive stack, a combo with four little drivers, and a matching four driver cabinet- at a live gig/ jam night. The owner was playing a Lakland Skyline five string jazz bass with Barden pickups. A nice sounding bass. I was playing the bass in my Avatar- one of my builds from1994, with three Alembic pickups and the Stanley Clarke tone filters. It is a killer sounding bass. When he was playing, I could hear the bass clearly, as if it was in a decent PA. I felt it a little, as well. When I sat in, I didn't change much on the amp at all. I felt like I was playing through a super high quality practice amp- I was pee-ing against the tide. Not an exactly pleasant experience. It did not push enough air to make me feel a convincing, powerful bass sound. My Carvin BX 500 and various 2x10 Carvin and Fender Rumble cabs, are so much better at that it's kind of surprising. My whole career until about 15 years ago, I would have never considered using ANY 2x10 cabinet onstage. Now, the technology, and tuning of these new cabs, is amazing. I also owned an Ampeg B-248 once. circa 1997. In the store, it sounded absolutely amazing, one of the best sounding combos I'd heard. I played a few gigs with it, and sold it. Besides being over a hundred pounds, it was like I said about smaller speakers. One 'legit' gig with some great players, it sounded like a bass kazoo. 4-8's? Nope. Maybe there is a good 4x8, but I haven't heard it yet.
Another friend has one of the PJB tiny 2-driver combos, and uses it for upright. It sounds good, but it isn't a live gig amp if you double, in my opinion.
I have actually, even with all of this, considered a Super Flightcase that I could get reasonably. Then, I spoke to the owner/seller. He told me nearly exactly the conclusion I already had come to. I love honest people.