With no competitors , Electrum is the best wallet on desktop but when It comes to phone , I guess that two people can't argue about the fact that Mycelium is way better. A simple review and download count check on Google play could do the job and tells you a lot.
I'm not saying that ThomasV don't have the abilities to make a better wallet , he actually does but I see him more focusing on the desktop version.
I think not that much more to focus on the desktop wallet since it has the most basic to advanced features any user from newbie to veteran should be fairly happy with it (as is the case until now it's the most widely used desktop wallet). I think ThomasV should focus more in the Android version as is fairly new and surely has a few bugs compared to Mycellium. Until ThomasV focuses more on the Android version I think Mycellium is better, but not for long in my view.