I need new gutters on the house. We also need to look at the plastic pipes that the downspouts are feeding into. Some of them look like they were done very well, feeding into PVC with what looks like a very good connection. We have one that looks pretty rough -- it's feeding into black corrugated plastic pipe and the connection looks like amateur hour. My guess is that it's that corrugated stuff the whole way and we might need a new pipe.

I'd really prefer that we only need to get one company to mess with all of it.

Any recommendations for someone who can handle it all?

I'm in East Dallas.

We used Dallas Gutters when we added gutters to our house, but they won't mess with anything that goes below ground. We had to get some drainage work done as well and they recommended Texas Oasis. I was very happy with Texas Oasis. No issues with Dallas Gutters.

Dallas Gutter and Repair has done multiple installs on my homes for over 20 years. Invest in the 6 inch gutter and oversized downspouts.

Thanks for the info! Really appreciate it.

I think magnoliaAg does all of these things too.

I used Phillips for a bunch of work in 2016 and was really happy with the work and price then.

https://phillipshomeimprovements.com/roofing/

but YMMV since that was 7 years ago.