juice flavors are all subjective. What I like you may not. The best way to find a flavor you like is just order a bunch that sound good from a few different vendors. Order samplers in 3ml to 6ml sizes. They're usually cheap so if you don't like some you aren't out too much. If you're lucky you'll find one or two you do like, then you can order larger quantities. You can keep reusing cart's for a while, but after a few refills the filler material will get packed down a bit and performance will fall off. To temporarily revive it just fluff up the fill a bit with a pin or needle. After a few times that won't work anymore so you can just remove and replace it with polyfill you can find at pet or craft stores. Many of us have simply given up on cart's and gone to drip tips. And don't worry about being an annoying NuB, we were all new to this at first and that's what the forum is for, to ask questions, get answers and share information.