Portable Hard Drive on both Mac and PC

Hey there,

I recently converted to Mac for my home computing. However, I still work in a PC/Windows environment at work.

I have a portable external hard drive that I use on both computers. Currently that hard drive is formatted as NTFS and I use Tuxera NTFS on my Mac to read it.

What I would like to know is will I get better performance from the portable drive on my Mac if I format it to the Mac file system (Journaled?) or will it be about the same.

Also, if I will get better performance by doing this, can I still use the drive with my Windows 7 comp at work, either natively or with a third-party app?

I would appreciate any advice you can offer.

Thanks!

Bob