I have both, the Lv1 is a smoother shooter and is comfortable in the hands,
as with both guns .. DO NOT DRY FIRE !!
the Lv1 you can use low or high pressure bottle regs on them ,
the 2 x dials inside the grip you must be careful Not to break ( they do very easy ) but thanks to Planet Eclipse having a Good Tech at CPPS was able to correct it for me
as with ALL Bob Longs you should only use LOW pressure regs !! because if you don`t you`ll blow the "O" ring at the OOPS if not more,
I prefere the G6R as it also is very nice in the hands, gives what I want in the feel and response to shooting.
I find the Lv1 when fired Dips with the shots and is good when shooting over the top of say a Snake ?
with the Bob Long guns G6R or a Victory , I find the trajectory of the shot straight and true,
I think the more reliable out of the x 2 .. is the Bob Long !!
if you get any Bob Long Guns , make sure you get a Pressure Tester with it for your low and high Regs ( sweetspot the gun )
of course different people may have their own opinions.
other than the above I agree with
@alexd and Kevin