1. Is it worth it?
2. Are there any issues with the jailbreak process for 4.3.3?
3. Are there any issues with 4.3.3 itself?
I like to use these tweaks:
Speed intensifier
LockInfo
SnowCover4
Winterboard
SBSettings
Cynact
QuickReply
Unrestrictor 3G
PkgBackup*** (just bought it and ready to use for the upgrade)
Are there any known issues with these tweaks on 4.3.3?