My personal favorite is named Hypnotic and is made by Cactus ropes. I usually don't buy anything stiffer than an extra soft but I like a little bit of flexibility in mine. Pretty much anything Cactus makes is darn good, I also like some of the Classic brand ropes. For a good rope made by a good brand, you won't find much under $30 and they can run up closer to $50 for others. You also will have to consider what rigidity you like (x-tra x-tra soft to medium hard), whether you want a 3-strand or a 4-strand, and the length that you need. Head ropes tend to come in softer firmness but they are shorter (average 30-32 feet), heel ropes are firmer and longer (average 35-36 feet). Then, of course, there are calf roping ropes that only average around 28 feet long. If you are dally roping, I wouldn't suggest one of those. A 3 strand rope doesn't feel quite so smooth in your hand and they tend to run a lighter weight than a 4 strand but they grip the horn better, they also usually run cheaper. 4 strands are heavier and they are a smoother feel, but it is pretty easy to burn some rubber off your horn with one from slippage. I usually take an extra wrap on heavier cattle if I am using a 4 strand.
Really, the best thing you could do would be to find a tack store that has a good selection of good ropes. They normally don't mind if you take one down and swing it around a bit to get a feel for it. Cactus, Classic, and Fastback are the best brands to use.
This site has an excellent variation of all different brands and styles. http://www.nrsworld.com/team-ropes-c...sp?a=3&dept=13