"Sell 'em all, put everything in VTI until you have at least $50k and don't mess around with it."
I'm curious about the $50k part. What is the idea if it is $50k or above?
"I don't know what funds you have or the ER but remember that just because Vanguard has low fees doesn't mean they have the best performing funds in every sector. Sometimes paying a higher fee is made up for by better total returns. All I'm saying is don't just say "oh the ER is lower so it must be better" compare total returns over a 10 year or longer period and see who comes out on top."
I did look at the returns. Over 10 years every single one of those funds under-performs benchmark by anywhere from a few basis points up to five full percentage points. For the shorter 5, 3 and 1 year periods the under-performance spread is greater for almost every one. There is one that is performing 5 percentage points over benchmark for the last year (I bet that looks good in the current promotional campaigns), but its 10-year returns are less than half (43%) of benchmark.
As I see it there are two options: (1) higher returns with lower cost, or (2) lower returns with higher cost. How long should I think it over?