I have four vv/vw battery power delivery systems: I have (all Innokin): vv/v3.0, SVD, 134 and MVP 2 (two of these) - no best - use them all - enjoy them all - all have their use.
Various toppers (ejuice delivery systems): IGO RDAs, iclear 30s, aspire nautilus, evod/MT3 and CE5s - always fun to buy and try new toppers
They all play well together except only smaller toppers are used on small vv/v3.0
In my experience all toppers require work: cleaning, recoiling, rewicking, clearing out floods, wiping away small leaks and on occasion just throwing away and replacing - it is what it is - extras/spares always required.
I save money through building my own micro coils, wicks, ejuice but not really an overall savings - seems I am always buying something vape related. After all I am an addict: smoking replaced by vaping.
