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Kawasaki Vulcan 1700 Classic
Honda VTX 1800 (I've heard really good things about Honda engines)
Suzuki C109R Boulevard
Yamaha Road Star...
The Vulcan is one of the best all around metric cruisers. Hydraulic valves, shaft drive, reliable, neutral handling, smooth at highway+ speeds. It also has (I believe) the most room in terms of seat to peg distance, but that comes at the cost of cornering clearance since the floor boards are lower on the Vulcan than others. The rear suspension has air adjustable preload with rebound damping. Some cruisers have little to no suspension adjustment capability at all. Some cruisers are also known to kind of wallow in corners and not hold a line, but the Vulcan tracks straight. I am selling my 2006 Vulcan 1600 Classic for $5500 here on BARF and it has 4k miles, so an almost new bike can be had for cheap if you can find one. I can cruise 80-85mph all day long on mine. The Vulcan is also liquid cooled.
The VTX is an overall great bike too, but cost of maintenance will be higher since it requires valve jobs.
C109 - don't know too much about that one, but when I bought my Vulcan it was most probably one of the ones I looked at. I can't remember why I ruled it out.
Road Star - I think this is the one with little or not suspension adjustment and some corner wallowing. I think it also needs valve adjustments?
Warrior - My friend has one and I have ridden it. It is a muscle bike versus a trimmed down tourer like the Vulcan. The Warrior is fast and fun, but my friend is working through some issues on his so he can cruise at 75+ and have the bike be smooth.
Triumph Thunderbird - I rode one. I think the Vulcan is more smooth, but the Thunderbird corners better.
If I were to do it again, then my short list would be:
Vulcan - If I were to get more in to cruisers again, I would go for another Vulcan.
Triumph Rocket - I don't know about reliability, but it just looks cool...and all that torque.
Newer Harley Road King or Street Glide - I have never ridden one, but from what I have heard they have a good balance between comfort and performance. Get one with the new frame redesign (I think from '09 on?) - apparently the older ones had an issue with the rear wheel not being in line with the front because of concessions that were made to go to a belt drive...this is just what I have heard and I can't confirm it.
BMW R1200C - Underpowered and an outcast in the cruiser community, but I think they are cool.
If you are planning on doing a bunch of customizing in the area of bling, then I would put more emphasis on a Harley....you'll get more out of it in terms of value, and after all...it is a Harley.