I listened to the audiobook. The narrator did a few different voices which I enjoyed. I only occasionally got lost but that could have been gps directions interrupting the action while I was in the car.

first and only is probably one of the best books to enter canon with but BOY HOWDY has canon moved on

space marines getting downed by a lasgun set to max output is very silly nowadays

I'll take some recs

Horus rising, caiphas Cain series