We always
used to get 10-Day NE with Park Hopper (through
UT - saves a few bucks).
We use the no exp if we plan on going to WDW for 2-3 days per visit, but would book a package if going for any longer than that.
Tix are more expensive for the first few days, and the additional days on a multi-day tix become less and less.
Park Hopper - same cost whether a one day tix or two day or ten day.
With tix prices going up every year...it can be a cost savings if you tend to take short trips. OR, you can purchase MYW tix before prices increase and just hold onto them.
Right now UT offers 5-day PH for $358 and 10-Day PH, NE for $754. If you take 2 5-day with PH trips, it saves you about $40 to get a 10-day NE.
Only you know how often and for how many days you would go to WDW and which scenario works out best for YOU.
All tickets become non-transferable once they are used.