Get Columns via REST

I'm trying to get a list of all columns/fields for a list via REST using the /_api/Web/Lists(guid'xxxx')/Fields endpoint. This works fine, except it's adding in all of the system and duplicate fields such as LinkTitle, LinkTitleNoMenu, ContentTypeId, etc.

Short of filtering it out after retrieval using $.grep, is there a way I could use the filter syntax or similar to have SharePoint just return the user columns from a list, i.e. the ones a user might see in an edit or display form?

Thanks!