Definitely the Acura. Infiniti's of that age aren't that good, and they aren't that reliable. Plus, I personally think the J30 is ugly. The legend looks so much nicer, is bigger, and I believe more powerful. Not to mention the RELIABILITY of the VTEC engine. To show you how reliable the car is:
According to a recent study, Honda has built over 22 million VTEC engines over the last 15 years. And guess how many have had a problem? NONE. Not a single one failed. Not a single lemon. The VTEC is probably the most reliable engine ever built.