You'd need a pretty big holding to make that move worthwhile.
Never mind taxes owed, assuming you're talking taxable acct.
Heck, if you were'nt invested yesterday (while funds are in transition), when market moved up 2.5%...it would take YEARS (DECADES?) at the lower ER just to break even.
Our IRA accounts are already at Schwab, so I've got several Schwab funds between my PP and VP. But I put my wife into Vanguard's funds, since they have the longer track record, plus I like the idea of hedging our bets a little. The difference in expenses isn't significant, but I can rebalance the Schwab funds for free so if they perform as well as (or better than) the Vanguard funds then I'll probably shift her over to the Schwab funds at some point.
The whole aim of practical politics is to keep the populace alarmed (and hence clamorous to be led to safety) by menacing it with an endless series of hobgoblins, all of them imaginary.
- H. L. Mencken