ST PREM/LE is a great pin in a small lineup. Why? Cause it has everything - short ball times, long ball times, flow, speed, scoring strategies, story capturing, Immersive light show, fun, excitement, depth, and a warp Ramp.
Regardless of what people say, the game is not grinding but it can be played that way and what I mean is if you tackle the game with the same strategy every game, it'll feel a bit repetitious. But that's what's great about ST - tons of different strategies and ways to tackle the game.
I have an IMVE on the way to compliment my STLE so I really can't answer the OP question quite yet except to get both! Lol. but for a small lineup - I'd go ST for the depth, and diversity that gives it a replay ability factor. IM & ACDC are kick your ass games - it would be nice to have a pin that rewards you on good play without any cheap drains like those other 2.
That said; I should mention, my STLE has gone to bat against some top pins in my pin rotation and has outlasted them all (ACDC, MET, LOTR). And of those top matches, ACDC was my least favorite to compliment ST - don't really know exactly why. So for that reason, you may want to go IMVE.