I'll be able to comment on that this spring when I put on on our club's field.
It is on the Jan. 31, 2013 posts of;
I have done the following, besides painting an Abt 506 colours/markings;
SLU conversion to IR
HL Upgrade Flash
AAF had problems with them, mine came with a broken idler arm which Baron Fel very nicely addressed for me, Karen helped arrange that. IMHO, the big problem for AF was that these were sold to non-hobby people withoutmodellingskillsor resources This is not a good scenario for reliability.
I like the quick release upper hull.
Mine has plastic tracks (which I wanted) but these are more robust than the HL Tiger I tracks.
The track tensioning system appears to be useful, the torsion bar suspension works nicely.
If it can be acquired for an attractive price and a person has the skill and resources to upgrade a few things, it changes the picture quite a bit.
As I recall, Baron Fel was talking about bringing them in as a kit, less electronics, etc., at a decent price for upgrade byhobbyists.
I see a lot of potential in mine, now and look forward to the 2013 season.
I could see getting another one, this time I have my eye of the Abt. 505 colours.