I have maxed Vivo T10 (L), so now SIB for me is Hedoc Sk-20 (L).
What i do:
carry TT Vivo T1 - for healing while not attacked.
carry T10 (L) - actually it is best thing if i consider heal/sec and eco as well for me atm - i use it when i need heal while fighting.
Why i do not use Hedoc Sk-20 (L)
(yet!) - becuse T10 still gives me better eco and heal/sec
. But soon i will swap T10 for Hedoc
.
So i think you should do similar:
carry TT Vivo T1 - for healing while not attacked.
carry T5 (L) - when being attacked (i asume it heals you more per sec than TT vivo but it is less eco)
Why not use non SIB faps - because they are really really un-eco (of course they heal a bit faster but in my opinion it is not worth it: if you need to heal really fast then you probably should wear some armor or you are hunting to big mobs for your level).
@edit
generally it seems that best idea is to use equipenet wiht SIB that is maxed or nearly maxed. Why? Because when it is maxed - it is probably most eco choice, and when it is nearly maxed - it sometimes is as eco as one level lower but already gives you SIB so soon you will have maxed next SIB level. (With guns i consider SIB weapon wroth using - when HA is +9.0 and dmg is 90% of maxed).
Falagor