As an ex-Subaru guy who got burned off brand parts more than I care to admit when I was younger and broker, the old cliches really are true.

"You get exactly what you pay for."

"Buy cheap, buy twice."

"If you can't afford to do it right once, how can you afford to do it twice?"

"Nothing fits like factory."

For absolutely cannot fail parts like timing components, oil and water pumps and head gaskets personally I would buy only direct from Mitsubishi. Other stuff, not as big a deal. But knowing how sensitive these engines are to overheating and what can happen if a timing belt fails, is saving $10 on something that isn't guanteed to meet MHI standards really worth it?