Need some advice guys

[Patrick]

I didn't get to try my 1515 2.5D on 4s last night. One of the other guys was looking at getting a neu 1515 and was thinking about the 2.5D, so we were going to put his 4s batteries in my car and see how it goes. But he decided a couple of days before to go with the new 2D wind (2050kv), so he didn't need to see how mine went anymore.
Another racer said he was going to get a 1515 1.5D (2700kv), but I haven't seen him for a few meets. It will be interesting to see how the 2700kv and the 2050kv 1515's compare on 4s. I've never seen a 1y though (2200kv).