I wear Peltor TacSports, the sound quality closely rivals the Sordins I have worn and they only cost around $100. They are light and comfortable, and I forget they are on. They even have a jack for plugging in Ipods or a timer. The TacSports are like the step up from the Pro 6's.
Avoid the $30 Remington ear muffs, the sound quality is terrible and usually only in one ear. Not to mention they are usually huge.