Although both is decent for the price, the SLG is better. If you have money for the SLG, go for it, otherwise the Piranha GTI is good enough.
You should use HPA with a Proto SLG.
Proto SLG all the way. Stay away from the spyders.
its a decent marker but a horrible value, for the money you can do much better in todays market
Yes.
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If you are thinking about getting a better gun because you have been playing for a while (which is what i am guessing) then go with the proto slg and sell the vibe. The proto slg is a good gun for the price and has all the modes you would need on it and is pretty accurate. Another good gun that is around the price is the azodin blitz. It is a good cheap gun that i have been playing with for about a year and 4 months and it has not failed me yet.
9 volt.
The threads are autococker threads. All proto and dye guns have autococker threads.
Yes, as long as it is Auto-cocker threaded, any barrel will fit.
DP G4 is definetly the way to go. The proto slg can't shoot as fast, isn't as light, and has way too many problems. The G3 was an amazing gun and all they did with the g4 is fixed the few knicks with it and the G3 was a better gun than the SLG. Plus if you ever do have a problem with the G4 the customer service is amazing. I love my G4 get it now!
$260 i believe but i recommend getting a pilot or electra because they are way better and cheeper. Better than all of those is the 09 proto SLG which is only $200 and is better than all of the spyders.
Sadly no. The Ultralight board will only work on the Ultralight frame. If you are looking for a good board though, maybe look into virtue boards.