Let me start by saying this machine is a BEAST when it comes to handling large projects. I recently bound 35 copies of a 30-sheet duplex manual, and while the prep work was tedious, the actual binding process was surprisingly smooth. The electric coil inserter is a game-changer - it saved me hours compared to manual binding.

The adjustable margins are fantastic for lefties like me, and the 46-hole pattern gives documents a professional finish. However, I did notice the same 'slanting holes' issue mentioned by another reviewer. After some troubleshooting (and a deep clean as suggested by the manufacturer), the problem disappeared. Pro tip: keep this baby clean!

Where it falls short is with thicker materials. Trying to bind photo paper for calendars? Prepare to do just 2-3 sheets at a time. The 15-sheet capacity claim only holds true for standard 80g paper. And yes, the lack of instructions is frustrating - I too had to consult YouTube university.

The biggest pain point? That unadjustable top hole. For perfectionists (like me when binding client presentations), ending up with a half-hole at the top is maddening. If precise top alignment matters to you, consider spending more for an upgraded model.

Final verdict? For occasional use with standard paper, it's a solid 4-star machine. For heavy-duty or precision work, you might want to look elsewhere.