So I'm heavily addicted now

I just finished building my first pair of b&c sub 18 bassreflex cabinets and they sound SO GOOD. I tried them out together with some old 3 way Magnat 150w hifi boxes as tops and it all sounds just lovely on low to mid volume. So since im properly addicted now what tops do I build. They need to be budget friendly, easy to build and have a lot of clarity.