[vikarti]

Some of reasons I don't use Calibre Sync:
- STILL no last read/read status sync
- Issues with LARGE library sync (as in 20+k books and 2-3k synced to devices). It never worked (CC is slow but it's work)


I still use CC with MoonReader(carefully selected version of, and restored from archive every time I need it on new device) (and Bookfusion as secondary system at this time. Sometimes I reevalute)

as for 'there to spend your money':I think:
if choice is between CS and CC - I think you should choose CS (at least CS IS being updated, you will get exactly nothing from paying for CC).
if choice is between CS,CC and BF - not sure.But not CC.
my choice all 3 but it was is but BF subscription was started long time ago and I think it worth it's price.
as BF's slower response - I don't think so. Response is rather fast if it's something that could be done right now. There was some issues via ticket system/email where they just put ticket on hold until it could be done. You also could use their Discord.

Also, speaking of price, maybe it's only me but:
- Bookfusion: almost ANY smartphone + almost any table + any computer at all. Sync is either work or it isn't. If it's isn't - it's either your very slow internet(like EDGE) or bug which should be reported and fixed
- CC/Moon+: let's say one of reasons I have rather pricy devices is due to me also using CC/Moon+. Samsung doesn't manufacture cheap and reliable DeX-supporting hardware, Uperect and Nexdock are also not very cheap.