Just for everyone's information,
Too many obstacles in scenery,
In G3 you can edit any airport to your liking, or turn off obstacles altogether with two clicks of the mouse.
don't like to have and extra control on the table,
Put it on the floor
j/k I know what you're saying here. One guy I know designed a wall mount (two nails) to solve this problem.
the heli doesn't stand out from background like real life, attitude is harder to see
You can turn up the brightness/contrast settings in the sim. They ship with a default brightness of 60% but you can put that up to 100% and will have no problem seeing the heli's attitude. Monitor brightness helps with that as well.
and the most important, the model just don't behave like the helicopters I had.
Which helicopters have you had? Each heli in the sim (ships with 14) has a slightly different feel to it, so what you saw might not have been a good match for your preference.
If you're leaning toward Reflex, that's fine too. They have a lot of good features in their sim, though it's a different feature set (ex. beautiful photorelalistic scenery but no multiplayer). The choice is yours.