Honestly I'd say get the Integra. It's better in every other way except weight. I owed an EG before I got my VTi-R. It was a huge improvement. Even just having a cup holder and arm rest standard is a big thing!

It's much more refined as well.

With the EG it'll be a bit faster but sit two friends in your car and it's the same weight as the Integra.

Also, keep in mind that the Integra was built to cope with the power, you'll be messing around with your Civic to get it perfect.

That's just my 2c