I’m looking to buy my first toy and the slimmer profile for the eupho is appealing. Should I just get one recommended for beginners like the helix? Or maybe the tempo is the best way forward. To be frank, my main concern is insertion, since I’ve only used my finger thus far. (Also, I know its ill-advised but do you think it is in the realm of possibility to not use lubricant and just water to slip a prostate massager in instead? If so, which material/design would the best for this function? )