Okay seriously, San Andreas was my favorite GTA ever since ...San Andreas came out, IV was a huge disappointment.
But GTA V is seriously f*cking amazing, I'm sorta scared to say it's better than San Andreas on my list because it's comparing 2 different generations ...But it's true, GTA V takes a spiky dildo and shoves it up San Andreas and IV's asses.
And let's be real, the main 'complaint' on this forum (As if forums are a valid source of ...Anything) is the lack of interiors.
But look at this from a logical perspective.
GTA 4 and Saints Row 3 have many interiors ...But their maps are tiny... And pretty repetitive.
I'd much rather have a huge diverse and interesting map that gives me tons of room to explore, drive and fly around to my heart's desire than more interiors that I'll go in about ...Maybe 2 dozen times during all my playtime.