What are your goals with investing? Buying under an LLC shifts the type of loans you would be eligible for, and likely rules you out of considering a house hack or using an FHA/VA loan, but opens up different funding options if you have the capital for a larger down payment. The LLC only offers certain protections to you; a lot of investors instead choose to invest in an umbrella insurance policy instead of buying in the LLC.
Also, keep in mind, if you are targeting property in Pennsylvania, while the switch down the line to re-deed from personal name to the LLC is quick and easy, it is not cheap. You will pay transfer taxes based off of the properties calculated assessed value, and if the property is in Philly city limits as your post location suggests, you're looking at a payment of 4.278% of that value being paid at close. An example is deeding a property valued at $100k from your name to your LLC or vise versa, you're now writing a check for $4,278.00 just to cover the tax payment to record the new deed, not including the recording fee and any fees collected by the title company or attorney representative who facilitates the transfer.