My take on it. First the new kit must be a subject that interests me, or I won't buy it no matter how "right" it is.
Now, if it's a subject that has already been kitted it must be an improvement over the exesting kits in my stash or I have no reason to buy it.
And if it a new subject that somewhat interests me, it's got to be right or I'll pass.
If it is a subject that interests me a lot and it's not quite right I'll make a decision on how bad it is, and if it can be corrected.
If it's way wrong I don't care if I drove one school ang got lucky in it, it's staying on the shelf.
Thankfully the Moebius models I have bought have been great, and severial upcomming subjects do interest me quite a bit.