Professional jQuery based Combobox control? [closed]

Here's one that looks very promising. It's a true combo - you see what you type. Has a cool feature I haven't seen elsewhere: paging results.

FlexBox

Anyone looking for a jquery "combo box" seems to be directed to this question. My post is for people coming to this page to find a "traditional" combo box, rather than an answer to the original question. The above solutions all focus on using the input as a means to filtering and autocompleting to an existing select value. (great for large datasets)

If you're looking for the traditional combo box, which is simply "Type something or select from these pre-defined values" (no we won't hide the ones that don't match while you're typing), all you may need to do is

<select id="combo4" style="width: 200px;"
            onchange="$('input#text4').val($(this).val());">
    <option>option 1</option>
    <option>option 2</option>
    <option>option 3</option>
</select>
<input id="text4"
       style="margin-left: -203px; width: 180px; height: 1.2em; border: 0;" />

See http://bit.wisestamp.com/uncategorized/htmljquery-editable-combo-2/

Should be easy to wrap this into a plugin that converts an existing select tag, though I haven't seen that done yet.

P.S.: The main problem I see with "jQuery Editable Combobox" is that it remains a select list, and it is not obvious at all that you can just start typing something new.