I've built the ICM pz ll-L, I liked so much, I have 3! This is also the 1 I learned/ practiced individual track links with. I've built DML, Alan, pzll a-c. If i remember, these two were basicly the same, It took alot of fitting and the tracks took alot of patients.If I remember ,the DML had more parts. Both were a challenge. I've built a few tamiya pzll's. much easier, makes later versions-(f+g) I think. It's has been awhile and i am writing this from memory . I have a ICM pzll-D although I have not got to it yet. I hope this helps.