Tippmann 98, very durable and easy to fix.
No. There are better, higher quality guns in the same price range. Azodin, tippmann and the Spyder mr series would be better.
Almost all of them. You need to be much more specific in what you mean by "better" and ask a less open ended question.
The agressor is sold as a higher model than the victor.
The sonix, because it has an actual hand grip.
Air regulators, barrels, hoppers, asa, and trigger wells.
Yes you can get a regular or just an air expansion chamber. They are extremely cheap.
they are the same design so i would say whichever is cheaper
The spyder victor is a more reliable gun than the JT. You should also look into the Azodin Kaos.
The tippmann 98 is more customizable, the spyder is smaller and easier to work on. so it depends on what you consider "better".
Tippmann 98's, spyder mr1/victor, and azodin ats/kaos are good to start.
There are no stocks that fit that model spyder.
You cannot replace the trigger buy itself but you can buy a new trigger with new trigger frame like in the related links: