Hi Markus,
I listened to borth your examples, with their improvements. Great that you continuously question yourself and try to realise better performances. So I can only cheer for that attitude. That's exactly the way we all had/have to walk. And after 5 years, I still have a lot to learn.
So I like your attempts. Paul is right about the building up of the room sound. EQ'ing won't solve the problem alone. A good setting will be necessary (not per definition the traditional orchestra seating), so that you make room for every single instrument/group to sound freely (panning, EQ'ing, volume balances per channel, ER and ER delay, releases per instrument/group...). All these elements can pile up and build an amount of unwanted sound, together with the usual reverb in the master. Compression won't change much. I only use it to correct balance details, so very modestly.
You could start balancing with the middle sections (violin II, violas, clarinets...) and go downword to the lowest instruments. When all these are in balance, you could start bringing in the higher instruments (violins I, flutes, oboe...) and set their correct volume.
A good advice: don't mix the note and articulation input with the acoustic matters (depth, panning, reverb). These are two separate things which you should keep apart. Let alone the mastering!
I hope that will help you a bit further.
Keep up the good spirit!
Jos