I purchased a 2007 Wing in March of 2010, it had 5000 miles on it, it has 25000 miles now. I have seen a lot of questions about what things people should upgrade first. Here is what and when I upgraded and my opinion of the upgrade. Like everything, you have to form your own opinion, I Hope this helps a little!
Traxxion, The Fully Monty : June 2010, expensive but worth every penny!
Kuryakyn Grips and Throttle Boss: June 2010, removed in Sept 2010, I didn't find them comfortable, and they really cut the amount of heat coming from the heated grips. Replaced in Mar 2011 with Grip Puppies which are perfect!
Alaska Sheepskins: June 2010, Love them (ugly as sin, but very comfortable, 1000 mile days without numb butt!)
Soundgate: Apr 2011, so far so good
Polk DB501: Mar 2011, replaced all 4 speakers, very, very disappointed. Around town at lower speeds sound quality is improved above 60 mph sound quality and volume levels are insufficient!
Ultimate Backrest: Mar 2011, as scary as it was to cut into the seat, install was pretty straightforward, and it makes a huge difference on longer rides!
Garmin Zumo 660: transferred it from my VTX in Mar 2010, I like it, but on a motorcycle GPS you should be able to search for nearby Motorcycle shops a function that is sadly lacking!
Darkside: Apr 2011, Excellent, Nuff said!
Fibroconcept Trailer with pet option: June 2008, Awesome! and DOG is my co-pilot!
Kuryakyn Switchblade Highway Pegs: May 2010
Fog Lamps: March 2010 Excellent, I use them as running lights all the time!
Kuryakyn Triple Exhaust Extensions: May 2011, look good, keeps the exhaust off the dog!
Aerostich Intercom adaptors: May 2011, Gr8 product, excellent sound
Honda Spoiler with Brake light: May 2010, very nice!
Radio Knob Mod for Gas Cap and RH pocket: May 2010 Love it!
I'm sure I forgot something, and after reviewing my list I'm going to make sure my wife doesn't see it!