Of the funds you mentioned in the OP, I own TGEIX, SPHIX, and PDIIX.
I don't own any allocation/balanced funds because I feel my active equity and FI fund managers can do a better long term job than the ones that would manage those applicable funds in allocation/balanced funds. However, the allocation/balanced fund managers might do a better job timing the movement in allocations between equity and FI, which, for the long term, might be a better solution to minimize downside risk.
For the record, PRWCX, FPACX, and VWELX all have a 1-2 per cent better 10 year annualized return than my core portfolio. Of course, you picked some of the best allocation/balanced funds.