Profire 2626, Fast track Ultra and C600 here, all worked first time, every time. What interface? I don't even notice it until someone asks.
I had a Focusrite 8i6 on this laptop but the device lost connection within 5 minutes of use and the software control interface would disappear. Swapped it for the C600, and never looked back.
The 2626 is an interesting piece of gear. There, the ADAT and SPDIF ports give me a total on 32x32 hardwired I/O, (with the FTU controlled from a second PC, coming into the SPDIF ports on the 2626, and with a pair of ADA-8000s feeding the ADAT ports), for a functional 26x26 I/O rig in realtime.
Upstream from the 2626 is a Focusrite ISA 2 in the patch matrix for pre-amp options, so I haven't totally given up on Focusrite.
An approach that has served me well is to purchase interfaces from local brick and mortar stores, instead of online. By nature, an interface has to function between two very comples arrangements of gear, the PC and everything else. There are likely to be issues at times, and a quick turnaround when making adjustments is key. Check the return policy before you pay.