<prompt> Human: Id like to start investing more. Ive had a TDAmeritrade account for years, but was feeling dissatisfied with it I didnt even know I had a Roth IRA on there until I did some poking around. I started looking at other options like Vanguard, which manages more than 5 TRILLION in assets. TDA is tiny in comparison.But now I am looking at some TOP 5 and TOP 10 lists, and they all say Ameritrade is great. Its making me re-think I should just stick with what I know.Im looking for opinions on this. Thank you.  <response>: Vanguard is genuinely great and there are a lot of points in its favor, but I do wonder if its grown faster than it can handle. Ive had some genuinely bad customer service experiences lately mostly because it was obvious the reps are new. And their online platform hasnt gotten a little shaky. 