Define "good and accurate"
I use the cheapest Chrony - often even cheaper buying refurb direct; some are said to come with bullet holes - because it's handy and disposable.
I have no reason to think the more expensive machines put their crystals in ovens (can't imagine it on a battery/low power machine) or are otherwise more accurate. I decided more calculator and memory functions along with remote operation wouldn't be worth extra money to me so I stuck with the cheapest.
I do have to discard some shots and wonder about others. I have no doubt the big Oehlers with proof channel offer better accuracy at the cost of extra expense and hassle with setup.