Garry's mod 1 or 2 ?

it's not really garr'ys mod 2 but s&box the creator says it clearly it will not be garr'ys mod 2 so probably s&box will have a different style of gameplay, garr'ys mod 1 is very poorly optimized with ragdolls and lights while s&box is very good in terms of graphics, shader etc.. and optimization