That's rather vague. Saying, "I wanna try new stuff, what should I try?" isn't really going to give you a good answer. What products have you been using in various categories (e.g. what have you been using for car wash, what have you been using for tire dressing, what have you been using for interior dressing, etc.). What do you look for in a product in a given category (e.g. what do you look for in a car wash, what do you look for in a tire dressing, what do you look for in an interior dressing, etc.). You mentioned cost and the ability to buy in bulk - with that in mind, have you looked at Meguiar's Mirror Glaze and Detailer line products?