There are a lot of whip/whisks on the market. A good one is not rocket science. You can read my full article on them to see what works well in different situations.
Unless you like spending double the price on some mall barrel brand or have the snobbery of scenic Sonoma’s stature on the handle, whips/whisks are pretty common equipment, and price and sturdy construction are the name of the game. WINCO is a leader in restaurant-grade gear that is tough and reliable enough for commercial applications, and thrifty enough to put a little extra coin back in your pocket.
For most basic applications, I like this WINCO 10″ Stainless Steel Piano Wire Whip. It has enough reach for small/medium pans. It is balanced well, and has a nice easy-to-clean design that can be thrown in a dishwasher.
I give this my Jazz Chef ChoiceStuff™ One Diamond award because there are a ton of equally good whips/whisks made, but this one has a great price and easy delivery through Amazon Prime, which every good cook should have as it opens up free access to a ton of books and movies along with the two-hour (Amazon NOW) to two-day shipping.