Depends on what you're trying to put on those units, and budget allotted for those units.
Take power/shoot/tech III for example; inexpensive at 1-2 slots but as you get to 4 or 5 the cost becomes much, much higher that you'd actually save more if you upslot a low slot one. Also, if you're planning on making something like Reverie + Factor combo then you really have to make fodders otherwise you'll spend alot trying to get a specific fodder off the market.
As for rings, you really shouldn't put important rings on a unit (combination rings, tech charge parry, class rings etc) and just stick rings that have maximum effect at skill level 1 on them (Wand Ele change, peace zondeel for example; basically any ring that's 6 jewels/3 rock/15 lambda grinders)
Connect With Us