Bridges you use?

What bridges do you use when transferring assets from one chain to another (like from Base to Polygon)?

Also, how much in fees do you usually end up paying? And what’s the primary reason you bridge your assets?

I’m asking these questions because I’m building a cross-chain trading terminal where you’ll be able to hold assets on any supported chain and trade on another chain without needing any gas or tokens on that destination chain. This will be fully on-chain, and you’ll also be able to choose the recipient address