Never used IE at all. Too many chances to catch unexpected malware and/or addware. My browser of choice is Firefox.
Metric distortions and incompatibilities are a constant headache for web content devs and not only from browser to browser but also in one and the same browser under different operating systems. For example, both AllBasic and OxygenBasic boards have the following glitch in my Firefox under elementaryOS:
while the button/text placement is perfect under all my Windows OS's and Mac OS X too. I've just trained myself not to notice it. Compared to the horrible web content proper that I come across every so often, these glitches are mere trifles.