I’d be curious to hear what kind of issues you’ve been having, as I’ve quite recently opted for Stripe over Paddle for the SaaS I’m working on (instorier.com). This Twitter thread [0] from some months ago finally tipped me over to Stripe, but considering we haven’t fully launched yet, I’m eager to know more.
It completely removes the need to handle taxes. Paddle acts as a Merchant-of-Record (kind of like a reseller) so they handle VAT and sales tax in all states for you.
I also don't need to invoice them. I just get my monthly payment in my Wise account (through ACH for 0 fees on the wire transfer) and never worry about the finance part.
[0] https://twitter.com/thekitze/status/1481579421031092233