I don't know of anyone who doesn't give pellets daily unless it's because they feed a pellet-free diet (either because their rabbit doesn't tolerate pellets well or because they feel they can provide a wide enough variety and large enough amounts of leafy green veggies to not need to provide pellets). Giving pellets daily is perfectly fine - it's the amount and the quality of the pellets that matters.
The House Rabbit Society recommends 1/4-1/2c pellets per 6 lbs body weight per day (depending on metabolism and how much veggies they get) for adult house rabbits (breeding/show rabbits and rabbits kept outside, especially during cold winters, have different nutritional needs so they're often fed larger amounts of pellets than what would be healthy for an indoor pet rabbit). A proper pellet for ANY rabbit has nothing but pellets - no seeds, nuts, dried fruits/veggies or other colorful bits. For a house rabbit, you want 12-14% protein and at *least* 18-20% (minimum) fiber. While many people feel it's important for the pellets to be made with timothy hay if the rabbit is an adult, alfalfa pellets
can be perfectly healthy - it all depends on if the pellet formula results in acceptable protein and calcium levels (and calcium to phosphorus ratio, as phosphorus interferes with calcium absorption, canceling out some of the calcium). Sherwood forest M/S food, for example, is alfalfa-based but is perfectly in line with the recommended protein and calcium levels... the same isn't true of most alfalfa-based pellets, though.
Here's a great site about pellet selection for house rabbits.
The main difference between good-quality pellets "pet people" feed and good-quality pellets that breeders/showers (and possibly those with outdoor bunnies) feed is the protein level - I believe the recommended amount is around 18% for those sorts of bunnies.