Sailboat Specific chartplotter gps

[Rortega46]

 I'm in the market for a new chartplotter and have been looking at sailboat specific displays that nicely display tack lines, lay lines, sailing time to waypoint, start lines etc.  The ones I am looking at are the Raymarine e7, Garmin 7407, and B&G Vulcan 7 or Zeus 2.  The Vulcan 7 looks great for the price but I am not sure how it will integrate with my Raymarine ST60 instruments or 4000+ autopilot.  Anyone have experience with one of these chartplotters? What are the good, bad and most useful features? Any suggestions or comments are welcome. 

[Roc]

I had a similar post as yours.  I'm still in the "kicking tires" stage...  Stu had a good point in my post on the subject. 

http://c34.org/bbs/index.php/topic,8736.msg62215.html#msg62215