I've used PDF Arranger for several years now. It gets the job done perfectly. Such a light program. Quick, straightforward. I mainly use if to generate booklets. It also does a great job to delete and rearrange pages in large or small pdfs.
I'd been using PDF Mod but started having trouble with crashes on startup and discovered it hadn't been updated in 11 years. I looked for a replacement and settled on PDF Arranger. So far it's been working fine.
I use it frequently to reorganize PDFs after scanning. I also use it when assemblying documents to submit somewhere. It's never crashed on me.
An awsome peace of software, very useful for all the basic PDF manipulations like: Merge and Split pdf documents, Split Pages in two Halves for (N-up PDFs), Reverse order (version => 1.6), Remove Pages, Import Images as pages into a PDF (version => 1.6)