Russian for yourself:
* reg.ru — convenient admin panel, the normal price. Many are re-sellers.
* webnames.ru too much. Although the support is slightly more retarded.
* if it is necessary quickly and cheaply .EN domain, then use domains.webmoney.ru They are available webnames.ru
Since 2002, all domains of the company where I work, all domains are registered in nic.ru (used to like another name was). Any special problems with .EN domain was not. Support normal. The admin panel also. While it may already used. But their prices are not the most delicious. The firm now to check there's a big discount