I have 650 but when I originally went to look for a bike I had it down to 2-3 choices, either the 400 burgman (1st choice) or an aprillia Atlantic 500, I loved the 650 but thought it wa too much money compared to the 400.
When I went to my dealer I had a honda elite80 with low miles. To get to my dealer I have to travel up some steep grades. Well to make a long story short.. I weigh in at about 260# I'm 5'10.
The dealer I went to did not have a 400 in stock (must have sold 1-2 weeks prior, I was in there and they had one). I like the Atlantic 500 also must have sold in the 1-2 week interum. They had a 650, I sat down on it and was sold. The seat was the most comfortable I have ever sat in. I figured hell this is my first new bike purchase ever (I have owned 5 bikes prior to...) and said you know what this is the first time I'm going to get exactly what I want, the hell with the expense.
I figured if I ever want to ride two up, I want full power for acceleration in the city and highway.
Prior to this I had a 91 Harley sportster 883. I took my cousin for a ride (together we probably hit the 400#+ of weight. It was a dog on accelerating.) I also had my mother and brother on the back at one point. It still lacked power to accelerate.
I spent many $$ to have it converted to a 1200 and even more to have it double plugged (2 sets of spark plugs in each cyclinder) also had the head shaved by 0.005".
Solo riding on this was like riding a bomb, It would pull sideways with the slightest twist on dry ground, when it was wet you could litterally throw it into a 360 with a twist of the throttle...
I wanted a bike that would serve me well under all conditions. I decided that the 650 was best for me all around (read with 2 up had plenty of power and remained stable with just me on it).
If you and your partner are planning on riding frequently together, I would suggest the 650. I'm guestimating that combine you weigh between 250-380#. I think this would be a bit much for a 400. But I may be wrong.
You don't want to make a purchase and 3 months later say to yourself, I wish I would have....
Only to be looking at a new bike again.
Historically,
I keep my bikes for 5-10 yrs, so I could justify the extra dollars up front.
If you do to then spent the extra and get what you need/want. If you trade frequently then go for the 400.
BTW: I paid retail 7699.00 plus 6% tax and the $125 set up fee/notory for mine. This did include a GIVI mount and E52 topcase.
Did I get the buy of the century, No. Did I get a fair deal? I think I did. Others have done better I know.
I purchased this on Aug. 24th 2003.
Ed
I'm reasonable satisfied with my dealer. Sales excellent, service fair to better then average (after reading here from others experiences).
if you want to know more PM me and I will tell all.
I've never rode a 400 and I decide to go with the 650 for two reasons.