Even if you don’t buy from beatport, enter in an artist that you like and see what else is suggested. You can make some pretty extensive lists of artists and labels this way.
Then you really do need to broaden your search. Like I said in my first find out artists you like and the labels they have released on, labels tend to release similar sounding stuff so this is the best way.
Others have mentioned soundcloud, which can be excellent, listen to our favourite dj’s mixes and you’ll find plenty of tracks.
Also try Juno/Rush Hour/Triple Vision, a lot of good techno releases come out on vinyl which youll find at the shops I mentioned, worth checking to see if they have also done digital releases.
I’m not saying you should go out and buy vinyl, but look at the vinyl techno charts, it will give you an idea, and some may have been released digitally.
But I have to say a lot of the best techno only gets released on vinyl and are vinyl only.
Stay closer to home! GEM Records has some great techno for you. Our fellow countrymen Secret Cinema and Egbert have made some lovely tracks, including this one:
Some older B-Pitch and Crosstown Rebels stuff released minimal as well, not so much recently, but when the sound was ‘big’ (04-09 era)
Perlon too.
In regards to artists..
Gaiser, Hobo, Matador, Villalobos, Luciano, Robag Wurhme, Argy, Domink Eulberg, Audion, Marc Houle, Gabriel Ananda, Minilogue, Sleeparchive are some of my faves, most have done releases on the labels you’ve mentioned so you’ve probably got them covered.
What I usually do is just go to the related section of stuff I really like on iTunes and there tends to be more like it. Soundcloud is another way to go, since producers tend to post either mixes or stuff they themselves listen to, which can lead to finding more stuff with a similar sound.
A friend of mine Joran Van Pol makes some great minimal techno
Joop Junior does amazing stuff
Some other guys i know are WHYT NOYZ, they have an upcoming EP on minus which is full of bomb tracks. Keep an eye on them.
I make Minimal Techno, here’s some of my stuff if you’re interested
Gaiser is the king of minimal! Another way is checking out boiler rooms on youtube, find artists you like and see if they’ve done a set for them then check on http://www.1001tracklists.com/ and see if they have the tracklist! Most of the big ones are there