The RROD was a big issue, but XB360 has about the same software attach rate as PS3 so I wouldn't say it's affected it's install base that much.
A lot of people got replacement 360s under Microsoft's warranty. I got 3 replacements under warranty. 1st console had RAM overheating problems, 2nd console got RROD, 3rd console got a broken disc drive. My 4th 360 also has a pretty shitty disc drive.
Other consoles also had a lot of failures though. First PS1 had CD laser carrier issues. PS2 also had DVD drive issues.








