It's not that I've spent too much time on this fabulous forum the last 3 days, it's that I got so excited about this whole vaping thing I couldn't help but tell my wife every time I found something new and exciting. Just ordered my first starter kit yesterday and the next thing I knew she asked me what kind I ordered her lol. I'm getting the Riva 510 and she liked the Joye 510 so guess what. Anyone care to share with me if the parts are interchangeable on these two or any other 510? There's a booth at the local flea market that sells some stuff, probably waaay to expensive but at least I'll have a local supply of atty's and stuff if they'll fit either one of ours in case of runouts or emergencies. I smoke about 1 min to 2 max packs of analogs a day (actually a pouch I roll myself) and wonder how many loaded carts or cartos I need to take with me if I'm going to be gone most of the day. I'm convinced that once my order gets here I'm going to be able to put the analogs down instantly. My thinking is that the cleaning and fiddling with carts and cartos can't take any more of my day than rolling 20 to 40 analogs. Thanx for all your help.