i kinda think it all depends on the map, coz, you can't play construction in de_dust, com on that'll be boring, or you cant play death match in a jail map.
so a the end i think standard is the best because there's more competition, the maps are usually hard and fun they also need skill, what i love is skill maps! like de_cs2d and aim_shotgun de_dust cs_office cs_assault, those maps with standard are the best.But one thing:It ultimately suck's when there are camper and ur dead so you have to wait for hours for the round to restart.
Aren't there similar threads/topics like this? Eg. 1st.
I voted for TDM(Team Death Match) because it allows respawn and it keeps the game active unlike standard gamemode when you are forced to wait for the round to end or wait for other team to die or if map goal has been completed whenever you've died. Otherwise you could just disconnect from the server and not be forced to wait for all that, just like I do.