One of the top rimfire shooters at our club has one. While I never shot it, I did get to see how it would stack up against a variety of factory sporter rifles like the CZ's, Brno, Cooper, Mod 52, Annies, etc. He could consistently score in the top 4 with it but had trouble winning. When he shoots his mod 54 Anschutz HB he is usually the one to beat. I was impressed with the Lithgow fit, finish and general overall quality. As I recall, I think he said it cost about 2x what a CZ455/457 might cost. I have seen used ones for $700.
On a 50y BR tgt with 250pts possible, he would score 240-244 with the Lithgow and 248-249 with the annie 54. My CZ452 American was closer to 238pts while by Win mod 52 was 246-249.