Maybe the PGMIII is no more complex, but aquiring one (especially with it's race loom) will not be cheap and options other than the normal road PGMIII are very very expensive and rare. I've seen two Avgas PGMIII's on Yahoo Japan, both went for way over £500.

By comparison my NF5 PGMII cost £21 (ebay) and an F3 one just went on Yahoo Japan for £70.

Are PGMIII's more common, there's a PGMII on ebay right now, surely more mc18's are being broken than mc21's?
_________________
Please do not PM me technical questions, if you can't find it on the Forum start a thread