Welp, in case anyone wants to hear from a guy who's got both...
Funny, my Pocher Aventador came out okay:
Paint quality fluctuates a bit from one kit to the next, so that's where your mileage is most likely to vary; the white ones seemed to have more problems with the factory paint, whereas this arancia just needed a little extra clearcoat to level everything out and shine it up. Engineering and fit were pretty comprehensively developed for around 700 parts total, otherwise. The single issue, pretty much on its lonesome, is that the damped door hinges may stand a bit proud and push the leading edge of the doors to a slightly wider gap than you'll see in all the other body panels, and that could be down to paint/powdercoat interference at the bosses where they screw into the body shell. It was otherwise very agreeable to build.
Something I really appreciated about this kit was its refinement of the whole Pocher "Prestige" concept that started with the diecast Ferraris, and the way it combined that improvement in concept with the architectural emphasis of the "Classics" line. Not only did the Aventador strike a better balance than the Ferraris for stressed and cosmetic parts and the materials used for them, it recalled the Classics' emphasis on the model building up in a fashion similar to the 1:1, with greater overall component accuracy than the Classics kits enjoyed.
The Huracan only escalates this. Individual buttons for the console now. A U-jointed shaft driving rack and pinion for the steering, rather than the Aventador's dogleg. Could the detail hounds really up the stakes with aftermarket bits? Of course. But simple paint finishing hardly leaves you with an embarrassment in a current Pocher 1/8 model.
DeAgostini models go for a comparable result, but they take a different route.
(the comparison is kinda apples to half-apples since the Countach is still in progress)
Where Pocher's m o might be characterized as classic kit design orthodoxy on steroids, the partswork subscription kits make it more of a stated objective to democratize the building process for non-modelers. As such, all parts are more comprehensively pre-finished where visible (in Kyosho's Countach, nearly enough to build without refinishing; in Altaya's GT500, less so), and perhaps not so representative where hidden. I've found the paint quality a little rough on the Countach diecast pieces, more so than the Aventador's for sure. The E-type Jag and the Shelby GT500 seem a bit smoother, but there may be stripe registration problems on the Shelby.
Here you'll see more emphasis on little gizmos like working lights and engine sounds. The suspension will operate:
but perhaps it's a bit less demure about its fasteners than Pocher's kits are. That peg poking out is there to raise the headlights.
More direct engine comparisons:
ANY kit will depend on what the builder does with it, but Pocher clearly leans a little harder on a modeler's interpretation.
DeAgostini/Modelspace does offer a support forum, but I've found one caveat there: if modelers are known to get defensive about kit criticism in a more general forum like this one, it's taken to a sharper extreme in a sponsored forum like Modelspace. One of their featured kits frankly has a design problem, and because the more senior members and mods there are uptight about acknowledging that, they also miss the fact the manufacturer actually provides a part used later in the assembly sequence that will solve the problem if it's "borrowed" earlier to help other components line up the way they should.
Instead, they've adopted the line that some people just don't have the mechanical inclination that others do, an approach that not only gets me sniffing for any odd limb in the water, but also runs counter to the apparent objective of making these kits accessible to anybody who wants to give one a try. I have a comprehensive answer, one that may actually help DeAgostini sell kits rather than drive people from the forum or leave them posting videos about how they gave up and canceled subscriptions in frustration - but I think I'll need to film a video of my own for it.
One other consideration: Pocher's a $7-800 hit up front (cheaper depending on where you look). DeAgostini runs more 12-14 all in, but you take $60-70 bites over a couple years, and you get those funky little magazines with each installment.