Comparing Sensations

Received my Aneros Helix a little over a month ago and it is an amazing experience. Everything I felt has been pleasurable but I am having trouble understanding what I am supposed to feel and what is not common....

1) i contract minimally with more agressiveness almost as if i am stroking something but i can't feel it. this (on a few ocassions) has lead to a warm pre ejaculatory feeling that lasts upwards of a minute. basically feeling as if i am ejaculating without an actual expulsion. it is pure bliss but this has only happened twice. this usually only happens lying on my side.

2) the second feeling is a little hard to explain. it happens when i have pressure on the Aneros. either my legs are hanging over the couch or i am sitting up right on a pillow. it feels like the Aneros is touching something inside almost silky and ticklish. it happens. then subsides. but also has a feeling like the first time you put something in your butt. the warm almost "does that burn" feeling? but this is more intense. i hit a point where it was this ticklish sensation that ran down my insides. it felt like the Aneros was turned on and vibrating and obviously it is not. then the feeling of burn became stronger with each wave. but was overpowered by me twitching and almost automatically bearing down on the toy. it overcame my whole body but i am not 100% sure it felt great. it felt different. pleasurable in a different way. not necessarily orgasmic. but it was definitely happening in waves. and lasted for a couple minutes. but yea no orgasmic pleasure feeling like felt previously.

which one is the right feeling? which one is the right direction? i ultimately want to do anything that causes pleasure. but i also don't want to go down the wrong path. it took long enough to clear my mind to get to where i am as it is....

thanks everyone