Gonna buy M 2018 + TI tip. Main reason is microdosing (0.01-0.02 g) through adjustable bowl, but saw few posts where people were talking about "loose" CCD in top groove, how common this issue is? Fast heat up time is also nice bonus, but some people say difference is small, other that it's big (like 10 vs 20 sec). As I understand faster cooldown lets you make more hits from one big bowl, because of less heat retaining compared to SS (herb doesn't get overcooked)? How do you think is it possible to get dark brown AVB through TI tip in one long hit with smallest bowl adjustment? Would like to have an option during purchase SS/TI tip, don't know what to do with SS tip if I'll get TI...