extermanl hard drive

Like, dude... it's way better... just because!

What?  What do you mean it's "way better"?  It sucks... for some things... it's very good... for other things... If you want the 5 year warranty, then get a casing and a seagate internal drive.  Install the internal drive in the case and then you have a 5 year warranty on an external drive.

I have had a 300gb internal seagate drive for six months that just died

So?  Drives fail. They have moving parts.  I had a brand new Western Digital 200 GB drive - it was dead before I installed it.  I've had drives die in weeks, months, and years... and some very old drives that have yet to fail.

No company produces drives that fail all the time - if they did, they wouldn't be in business.
No company produces a product that NEVER, EVER, EVER fails.  

No computer professional trusts a hard drive never to fail and they always backup their data to another drive or other media.

Hopefully, you called Seagate, gave them information on the drive, and if it was still under warranty, you got it replaced, right?  Or did you just throw it out?

i did a rma, sending it for replacement tomorrow

Good, so you'll get another drive and be fine.  I don't see the point in saying one company is better than another - most of the drives I've seen fail are Western Digital.  But then again, most of the drives I've seen are western digital.  As for what I use?  I use whatever I get for free, REALLY REALLY cheap, or that has the best warranty.  Currently, my systems use:

Workstation:
1. Seagate 30 GB
2. Samsung 250 GB
3. Fujitsu 73 GB
4. Quantum 18 GB

Server:
1. Samsung 160 GB
2. Western Digital 80 GB
3. Samsung 160 GB
4. Western Digital 120 GB
5. Hitachi 160 GB
6. Maxtor 160 GB

I'm not worried about any of these failing... because I know any could.  So I do backups.

no one never said one company was better than other, my friend said it
was better to get an external that way I can take it anywhere

so im just waiting for someone in here to tell me which external shall I buy!

yeah! thats what im talking about!! i didnt know those things existed! looks awesome in the pic!

Leew is giving good advice . . . I bought one of these earlier this year and liked it enough to buy four more for Christmas gifts . . http://www.newegg.com/Product/Product.asp?Item=N82E16817145379

I have been using seagate for longer than I care to admit, and I swear by them.  In fact, I still have an old Seagate 103mb HD that still chugs away.  No... I do not use it in a production machine, but I just keep it running in an old 386dx that I have running in the garage... just for nostalgia.  I have seen SG drives survive a lot of abuse and come out fine.

I am also fond of Western Digital, and can say that I have not had many problems with them either.

Both companies have a good selection of external drives.  You can also be adventurous and by a kit and make your own external drive.  I made a couple and it actually came out a little cheaper than buying an external already made.

Pro's
External drives are easy to pickup and take with you somwhere else
Internal drives are fast.  Fast to copy data, fast to run programs off of (especially games).

Con's
External drives are slower than internal drives.
Internal drives are not easy to pickup and take with you.  (if you need to move data from one computer to another)