there are two basic schools of thought about the king james version of the bible:
belief 1: God infallibly inspired the king james version of the bible so that no other bible translations are necessary. this belief asserts that not only are the original greek/hebrew manuscripts infallibly correct, but the english translation also. the kjv is the first english translation of the bible. if God made this english translation infallible just like the original manuscripts (assumed), then no other english translations are remotely needed.
however, few people actually believe this.
belief 2: all english translations of the bible are fallible, thereby necessitating 100 different bible translations, each one improving against the errors which came before. this assumes that the king james version is perhaps the least accurate of all early translations, because it came first before all other translations. thousands of later bible interpreters disputed the interpretatios of various words/passages within the kjv, thereby necessitating the creation of 100 additional bible translations. each successive translation should improve on the ones before, in general. this the latest translations will usually be the more accurate than the early translations. again, in general. there are exceptions.
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the most accurate word-for-word translation in my opinion is the NASB 95 Update (new american standard bible 95 update), although not necessarily good for people with a low reading level.
a close second may be the ESV (English Standard Version) which is a bit more reader-friendly for those of a lower reading level.
you probably needn't bother with anything else, unless your needs are much more specific. there are some other goods ones also, but they are probably outdated by now, even though they were the best a few decades ago.
beware, however, regarding some versions which are merely better-marketed but have lower quality levels. for example, the NIV (new international version) is the best-marketed bible, but it's interpretational accuracy falls far short. the corporations just market it better for profit.