Ill give you my 2 cents.......I own the very boat you mention Targa V18 (2012).... I'll give you a little background first
I spent 10+ years working in the Marine industry at the retail level. Worked as both as sales rep and a Store manager.
Was resposible for boat sales, ordering from manufactures etc etc. I always had a Aluminum boat as my demo as I liked to fish.
In addition I have owned several different aluminum boats over the years. Smokercraft , Crestliner, Sylvan, Starcraft, Grumman, 2 Trackers and maybe 1 or 2 more I cant remember.
I did have one with a leaking hull brand new from the factory....it was a Smoker....they took care of it with no trouble.
All other boats no significant issues.
As for Tracker hull issues. I also read some of the horror stories on line when I was researching for my current boat.
I looked at it like this. Bass Pro shops is a marketing & retail powerhouse. Tracker far and away sells more aluminum boats than anybody in the industry. (This doesnt make them the best just the biggest). They sell more in some months then many other manufactures do in a year. With all of these sales they have a greater exposure so you are more likely to hear and read about problems. With the amount of boats they sell each year the odds of having one with hull troubles probably isnt that much greater than from another manufacture.
As for the new Targa, the good and the bad
The Bad
On the way home from the dealer I blew a tire....had no spare of course. Tracker paid for 2 new radials to be installed at a local tire shop (trailer did not come with radials from the factory)
Not long after I got it home I noticed a defect in the paint. I took it to a local body shop and the local Tracker Dealer (not where I purchased it though) It was everyones conclusion that there must have been some damage to the paint like a large scrape or something and a repair was attempted instead of repainting the side of the boat. After a little bit of going back and forth with Tracker they agreed to pay for that side to be repainted. They sent the paint, the decals and the check no problem.
My only complaint with the design of the boat so far is the bow area is very tight...but this leaves more room in the back.
The Good
The Beam is 102" widest in its class.
Wide gunnels for mounting DR's (you will need to plate underneath them)
Handles rough water well for a boat its size
Price. 8-10K less then the Higher end boats with alot of the same features. This is money you can use to outfit the boat.
Boat Comes standard with a 115HP....spend the extra and get the 150.
I would certainely recommend looking at the Lunds, the Crestliners and Alumacrafts
Sorry for the long post....just wanted to give you as much info as I could
Hope some of this help....Good Luck with the sale of your old boat and the purchase of the new one.