Strain best suited to me?

Well what's up people, first thread on here all the way from Ireland! I'll get straight to the point. I have been smoking weed for the past year and recently came off a two week tolerance break back onto heavy smoking for about a week, going off it from tomorrow until I get my own personal green. I was just wondering from you're personal experiences in the term mental state which strain would best help you? Don't get me wrong I don't need to smoke weed but I prefer if I did and I enjoy it - Smoking a good sativa would take the edge of me being a little snappy, more calm and peaceful, including a great feeling of well being, however some make me paranoid and some just make me sit in a bad mood and be like well this is fucking shit 'even if the green was dank' - but then worst thing for me is I cannot find a Sativa strain that will not make me fade out once it starts to wear off, I smoked a really strong sativa haze not sure what strain it was but it blew the tits clean off me so hard it's like i was just a little tripping, it gave me a really good head high and didn't make me tired or drowsy wearing off, just normal again please not I can do a fair bit of toking in a bong no sweat man!