Proofreading Data

We've just started using Easy Catalog to more fluidly convert databases (membership directories/listings that are printed in our magazines) into designed pages. So we decided to also start proofreading and editing in the database rather than on the page or in InCopy to avoid having to "convert" more than once. But it seems to be throwing off our proofreaders to proof in excel. Is anyone else proofreading in excel? If so, did you hire out to a freelancer or professional data company or did you do it in-house? We're talking hundreds of entries... Thanks!!