Terminator has a frisson in that it's Jim Cameron going all out trying to make his mark. Within the strictures of his budget he's squeezing out everything he can to make this story work and be a hit with the audience. But you also see the beats he will hit again and again in this film. His mastery of telling a story via on screen action that is propulsive and yet easy to follow and understand. And perhaps the frantic need on his part to make this a splash translates to the screen because the film is so tight and bare bones but also engaging. It's like eating a really good but simple meal. It might just be steak and potatoes with a salad and a cold beer to wash it down with... But the steak is exactly as you like it, the potatoes are pitch perfect, the salad has enough variety and accents to not be bland and the beer is a great German import (Or... Austrian as the case is here...) that goes down with a satisfying crisp but strong flavor.
All that said...
I have to give this to Aliens. Yes, it's a sequel. Yes, it changes gears from the Lovecraftian space nightmare to a more relatable military sci fi adventure. Yeah, now Cameron has the budget to do what he wants... But this doesn't create some sophomore slump. This is Cameron unbound and if Terminator is a great but simple meal, Aliens is a four course dinner done just right, and never once tipping over the precipice into either bloat or pretension. In fact, similar to another of his films, The Abyss, Cameron cut this down for fear of bloat but he could have left what was cut out in and it would only enhance the experience. Inspired greatly by the prose version of Starship Troopers Cameron brings us a easily recognizable characters in the same way that Scott's film did with his "Space Truckers" but here it has a military twist to it. And that's the thing... This film feels totally and completely compatible with the world set up in Alien. It's not mining the same kind of body horror, slasher film type of vibe sure. But... There's no doubt it is in the same fictional world only the story has now branched out into another area. What's interesting is that while the Marines are certainly more well equipped on multiple fronts to deal with the situation in comparison to Ripely's first crew, they are no less the underdogs, which is a common trait of Cameron's films. The dialog is snappy and quotable, the characters well defined but with human graces and foibles, the production valutes tops for their time, the score is amazing and the action is superb. This for me is a case where, as much as I adore Terminator, bigger is indeed better. I think that while Terminator just works as a mini masterpiece the copycats that came after soon died. Aliens on the other hand? We are STILL getting Aliens rip-offs til this day. That shows how the film still resonates but I think it might muddy the waters a bit for the true appreciation of what Cameron's second true blockbuster achieved.