Bass clarinet reeds (several questions)?

Hello, I have a few questions to which I would greatly appreciate if they were answered. The first being, what brand of bass clarinet reeds do you find suites you best and has the best quality over all? I play on a vandoren 3 1/2 reed when I play. I have also played on rico, and rico grand concert finding the quality of the reeds poor I stuck with vandoren. I also shave my reeds and rub the backs with paper. What method do you find most helpful when dealing with reeds? Also, what reed case do you find most helpful and convenient? I use a hodge reed case that hold five bass clarinet reeds, it works well, but I was wondering if there was anything better. Also, if I was to use a reed case with an adjustable Humidifier, what amount of humidity would be best for my reeds? Lastly, what mouthpiece do you find works best for you? I have a vandoren B45 and I am trying to figure out what one I want to get next. I am thinking about the vandoren B50, but I am not too sure yet. Thank you for reading and hopefully I can get most, if not all, of my questions answered. Thank you.