I used to use YNAB + Mint, but moved to using a custom annual spreadsheet + Mint.
I like the YNAB approach a lot, I jumped in and started using it (pre-subscription, the standalone version from Steam). As they made their transition, I created a custom spreadsheet with tabs to plan budgets, track expenses, summarize data - a pain to create but fully customized for me, so it works exactly how I want. I track all expenses manually and have a rolling tally of all accounts at any time. I really like the flexibility of having all of the data and can create pivots, charts, formulas to get pretty much whatever lens I want.
Mint is a fantastic tool, to me, and covers my local credit unions, all my banks, my 401k, student loan vendor... even my paypal account. So I managed to get ALL my account information rolling into Mint, making it easily accessible - their mobile app works well for me. I primarily use Mint to balance my custom spreadsheet, so I can logon Mint and view all accounts across all accounts instead of logging on 10+ sites to view transactional data - Mint is kind of my personal financial data warehouse. But, I never liked (maybe just don't understand) Mint's budgeting and balancing features. So the combo works great for me.
As someone stated above, I think the more important thing than the tool is the diligence of actually tracking and balancing your accounts and expenditures, regardless of the tool.