Oh man, do I love this question! I want to preface my response with the fact that I am not limiting my response to only techno. I am going to include all electronica. I've got a lot of suggestions for you, bro. I will even give you a song or two you need to check out in order to properly judge some of these artists:
1) First off, please check out any and all Anjunadeep artists. I think this is by far the best record label for electronic music. Lots of the recommendations below are people signed to Anjunadeep.
2) Deadmau5
3) Avicii
4) Zane Alexander (XXXDrug, 3am)
5) College (The Drone, Amira, A Real Hero)
6) M.O.O.N. (Dust, Crystals, Kid Francescoli, Hydrogen)
7) Fantom '87 (Home)
8) H A G H O R R O R (Machine Talk, Der Neue Kult)
9) Deep Chills (Waikiki, Feelin' Good, Lighthearted,
10) Nora Van Elken (All Night Long, Amazon,
11) Mynga (Share My Dreams)
12) Rayman (In My Dreams - Kygo Style)
13) Daft Punk
14) Rufus Du Sol (Innerbloom - original and Lane 8 remix, Like an Animal - original and Yotto Remix,
15) Above & Beyond (Counting Down the Days feat. Gemma Hayes - original and Yotto Remix)
16) Lane 8 (Undercover feat. Matthew Dear, Diamonds feat. Solomon Grey, Fingerprint, Sunday Song - CloZee remix - - - Lane 8 is one of my favorites, check him out, dude!)
17) Yotto (North, )
18) Luttrell
19) Guy Gerber (What to Do - &Me remix)
20) Glude (Dreamers - NCS release)
21) French 79 (Hometown)
22) Massane (And We Knew It Was Our Time - Lane 8 collabo)
23) Kavinsky (Nightcall)
24) Lifelike (So Electric)
25) CloZee (Neon Jungle - original and Lane 8 remix)
26) Anderholm (Clarify, Bluebird)
27) 16BL (You Are High)
28) Jerro (Demons feat. Sophia Bell)
29) CRi (Never Really Get There feat. Jesse Mac Cormack)
30) Marshmello
31) Fatboy Slim
32) Air (Moon Safari - the entire album and the song of the same name, and any other album/song they've ever made - - - this is probably my favorite music of all-time)
33) Sasha and Digweed (absolutely anything they do is phenomenal, another one of my favorite artists ever - Northern Exposure is my favorite album)
And so much more....
Any recommendations for me?
Cheers!