Guides
Buyer's guides
Two kinds. One walks the whole purchase from first idea to first annual. The others go deep on a single model family, year by year, so you can tell a good buy from a tired one before you fly anywhere to look at it.
Buying an airplane
9 steps, from working out what you actually need through the prebuy, escrow and your first year of ownership.
Which year to buy
More families are being written. Each one follows a full re-sourcing of that family's specifications, so the buying advice is formed from verified numbers rather than written ahead of them.