Recommendation for US / CH tax services

Hi all, I'm wondering if anybody has personal experience with a tax provider that does both the US and Swiss side of taxes? I suspect ours will be on the slightly more complex side (dual earner with one of us self employed, rental income, various investment accounts, etc.). We have a professional firm to help us this year and next (our first two years in CH) but that benefit runs out after two years. Thanks!

Dan

There are multiple providers who can help.

Initially I used to get the taxes done via my bank but then I went to an independent provider.