You are asking for a lot of info in one post. First off my ranking is Champion (ride and good fishing platform), Bass Cat (ride), Ranger (good fishing platform), then all the rest. Lots of guys will have different opinions.
The Javelin was a pretty good boat in its day. Genmar cancelled it when they bought out Champion and moved it from AR to the Stratos/Javelin plant in TN.
Stratos is an ok boat but not top of the line.
Check NADA for the pricing of the Javeline.
Towing isn't as bad as stopping. Be sure you have good trailer and tow vehicle brakes. My wife pulled my 21' boat all over MS, AR, MO, and TX with a Ford Winstar mini van. She is now pulling it with a Jeep Liberty CRD.