Had my eye on the Lazeroni thumbhole also, nice stock, went with the Boyd's thumbhole instead, Ditto on Richards Microfit, get ready for a lot of sanding. Boyd's is prefinished.
Was gonna go with a richards for my cz to give it a try but still haven't heard back from them so I'm going with the boyds. For the barrel I was set on a krieger but have opened my option to lilja (have one on my rimfire sweet barrel) and bartlien. Decisions, decisions, decisions . I would imagine out of the 3 I really can't go wrong but would hate to pick one when one of the others could give me a slight edge.