Backrest that is!  So I got a boat load of take off parts delivered to the house today I bought from BSTON.  Great all around guy and fellow forum member.  Anyway the parts are from a 2003 and my bike is a 2006.  As you know, the seats are one of the few changes between the two and I'm having a tough time deciding which to choose.  I also like the look of the backrest that came with the parts but the wife claims she will not ride with me so I really don't need it  .  
My options are below and BTW I also have both rear fenders so that is not an issue.  I know it comes down to personal preference but I am looking for some of you experienced riders input on the best choice.

1. Leave as is stock 06 seat with no backrest
2. Add 03 backrest to rear of 06 seat
3. Use 03 seat without backrest
4. Use 03 seat and backrest

Thanks​ for the input!  I am definitely looking for opinions on looks, comfort, and functionality so keep them coming!

I have the 2003 backrest on a 2006 seat. Shorter bolts were needed to install. It's a great way to hold my helmet to the bike while it's not on. And a great way to secure the helmet to the bike (with a cable lock running through the visor and through the backrest).

My girlfriend doesn't like riding pillion either, but I like the way it looks and it's been practical.

I ride 99% of the time one up but I like the kit bag secured to the backrest screws to hold water/phone etc.

My bike came with the backrest.  While I  like and appreciate (and am often amazed by) the customizations many have created with their Savage, my bike is my commuter vehicle in decent-to-good weather so I still need functionality.  Problem was I wasn't too fond of the look with the backrest so I took it off and added saddlebags.  But the backrest is very handy for strapping things to it.  Like you said, personal choice.  

But if I had the parts on hand like you do, I would convert to a single seat using just the front part of the 2-piece seat and cover the back of the fender with a bib to hide the holes.  That would be my personal preference.  Let us know which direction you go.

I know there's a lot of pics for you to browse and I haven't done a whole lot to my bike, but here's how it looked stock and how I ride it now.  I think I need to clean up the back end; Suzuki gave us a pretty ugly license plate mount.

Thanks for the advice so far guys!  I am thinking I will go with the backrest as I can always take it off if I get sick of it.  The seat is a little tougher decision.  I may see about using the 03 rear fender and add a hole for the rear bolt to mount the 1 piece seat so I can switch back and forth.  I just have to get out to the garage to see if the u shaped bracket welded to the 03 fender for the tab that the rear 2 piece seat slides under will be in the way if switching to the 1 piece seat.  I will check back and let you know.

Well I played around a little today with the various combinations and I think I landed on option 2.  2006 1 piece seat with 2003 backrest.  I took both seats for a test ride and didn't care for the feel of the gap between the front and rear seats from the 2003 on my rear end. Also realized if I use the 2003 rear fender I would need to remove the u shaped bracket to use the I piece seat.  Please continue to chime in with ideas.

Thanks, I will do just that!  Learned something else today as well
 The u shaped bracket on the 03 fender clears the 1piece seat so I installed a threaded insert in the fender​and plan to use it so I can change seats anytime.