I liked the chase sequences and the amnesia angle was well-handled, but the writing itself can feel pretty dry compared to modern stuff. It's from the early 80s, so it's a very procedural, detail-heavy kind of thriller. Less flashy gadgets, more paperwork, dead drops, and tradecraft. The pacing in the middle section dragged a bit for me, honestly, with a lot of logistic planning. If your benchmark is something like a Vince Flynn or a Lee Child novel, you might find Ludlum's prose a bit dense.
Where it absolutely delivers is the sheer paranoia and the protagonist's isolation. You really feel Bourne's confusion and the clock ticking against him. The political conspiracy behind everything holds up surprisingly well, even now. It's the foundation for a whole genre, so for historical value alone, I'd say give it a shot. Just go in expecting a different rhythm.