Learn English – How legitimate is the phrase “from which one to choose”

grammaticalityphrases

Here's an example.

If you want to get a PC and you don’t know from which one to choose, choose something simple.

It doesn't look consistent logically, but another person insists this is the correct form. I find it irregular because it's not exactly a choice if there is only one of… well, anything to choose from.
Is that phrase really better than either of the following examples?

If you want to get a PC and you don’t know which one to choose, choose something simple.

or

If you want to get a PC and you don’t know from which to choose, choose something simple.

Best Answer

"from which one to choose" isn't idiomatic English and doesn't make sense: you can't choose from one.

You have to choose (or select, or pick) from a collection, or a set--from more than one, in other words.

choose from those offered in the store

choose something simple (from those offered or from those available)