QRT vs SIG for C++ quant dev.

Got offers for both for similar money in London, but the base is higher in SIG. QRT seems to be a bigger name, but didn't connect with the team (teamlead and manager) so well, while in SIG people seem

Got offers for both for similar money in London, but the base is higher in SIG. QRT seems to be a bigger name, but didn't connect with the team (teamlead and manager) so well, while in SIG people seemed to be really nice. SIG's office in London is satellite to Dublin -- only about 60 people, while QRT's London office is huge in comparison (which probably means more opportunities/cool projects?). Also in SIG work starts very early which is hard for me, as I'm not a morning person. Unclear about the comp progression -- some say that QRT can pay way more in the future, and they hire a lot of talented people for top firms, while I haven't heard the same about SIG. Leaning towards QRT, but worried about toxic management/not enough structure/potential layoffs after rapid hiring. Thoughts? Would appreciate an input from people working in either company.