The debate is always clear, you either love lids or you had them. I feel that ppl with big/bigger hands like lids moreso then ppl with smaller hands. I used to own birdies for the longest time and have since switched to the discraft rattler. My personal favorite of the 4 is the rattler. The plastic has been revamped and it is no longer AS hard as it used to be and just feels great in my hand and it's just a touch faster of a disc. The birdie is a close second because it is almost the same disc with a thumbtrac and the polecat is basically the same with just a different plastic and the rim is a little less deep (or atleast the one that I used was) and has a touch more glide then the rest.and my least being the sonic. The sonic just feels really cheap to me and I don't like how the ribbed thumb track feels in my hands and it's the most understable of the group by far. These are my personal placements and I'm sure that everyone is going to have different opinions about what I'm saying here for sure, but again just my opinion. Ppl say that they are bad in the wind. You would definitely be right, BUT every disc has it's pros and cons, EVERY disc no matter how great it is or ppl would just throw one disc. The lid discs that I've tried I.E. the polecat, birdie, sonic, and rattler fly all about the same minus the fact they are slightly different in the speed and glide category. (This is my pros and cons list for 175G putters that's the best weight for me so if you have a lighter putter it will for sure float further with less effort and be a bit more understable.) The pros of these discs are they normally have little to no fade, they don't fly too far past the basket when you miss and they are incredibly straight flyers and are great for elevator putts/shots and 100-150+ approaches that require a straight shot with little effort. The cons of these discs are they definitely aren't good in the wind because of there shape and how big they are they, definitely act like kites (I would even be careful with those easy 5-10 ft easy putts I've had mine fly over the basket in a descent wind!). They leave very little room for error if you're throwing them straight because wherever you throw them they will land for the most part straight. They sit down as soon as they lose speed really quickly, that isn't necessarily a weakness moreso of a personal preference (I for one like that.). So these discs can definitely make an addition to anyones bag just as long as you understand what they are supposed to be used for. My advice for everyone out there would be to have your normal set of discs AND discs that are great in the wind as well for EVERYTHING not just for putting. I for one use the challenger for windy putts. I hope this helps.