Having used Kase Filters for a few years now, I can wholeheartedly recommend them as the go to brand. Using glass filters (Kase are almost unbreakable by the way) which are anti-glare coated, combined with a very neutral grey, this is excellent at helping to balance your exposures to get detail everywhere.
Try out Kase Filters for yourself with a Kase Filters 1 to 1. If you intend to buy a Kase product, or their whole kit, I can provide a 10% discount on retail prices after the workshop. Since these workshops are on a 1 to 1 basis there is opportunity to adapt to your needs.