Diva cup or femmecup, please please help, i dont wanna make a mistake?

now im a day or two from ordering my femmecup, however, i only plan to buy one and one only. I need rely high capacity cuz for 13, i go through a super tampon and a liner in 20 min on my heavy days, and a divacup holds more thn a femmecup, i already broke my hymen so thts no problem, i donbt think i can feel my cervix, when i reach behind my pubic bone i feel something thts jus like tissue, they says its a sold like nob and there should be a kinda spacy area but i dont feel tht, would it still be ok to use the diva cup? i can get both at about the same price wit no problem, but like i said i plan to but only one cup and i want it to be the right choice