if you like thela i'd recommend windy and carl, maybe their conciousness LP first. later period charalambides, e.g. joy shapes & live dead. maybe Biosphere would be something you'd like too.
here's a list:
yoshimi & yuka - flower with no colour
kuwayam-kijima w/carter thornton - shrine
chris watson - weather report
scorces/tom carter - beats for the beast
inca ore
jessica rylan/can't (not sure if this fits with your description so go to her website and listen to sound samples,
www.irfp.net)
john fahey - hitomi
christina carter - living contact
also the finnish psych folk thing is full of easy on the ear but out there type stuff, e,g. Es, Islaja, Kemialliset Ystavat, Lau Nau.
Actually, the 6CD Invisible Pyramid /Elegy boxset would be worth investing in, and it's very reasonably priced, and very excellent, look here:
http://www.lastvisibledog.com/080.htm
as far as fennesz goes i'd choose endless summer over venice