New breed: Bigger, wider, larger (fixed) gap, slightly more rounded shape (with flared out rims), i do not have one, but i have heard good things. Also silicon pad response.
X-Convict: Smaller, thinner, smaller (adjustable) gap, less rounded shape, o-ring (but can take silicon with out “modding”) I tried one and liked it. The gap is a little small at first, but not too bad. Once you get used to it, it is a great throw.
I recommend the X convict if you want smaller, and the New breed if you want bigger. In my experience (never trying the new breed) most YYJ metal rimmed yoyos play VERY similar. Not the same, but similar. You can’t go wrong with either.
KK (konkave)- I got one yesterday. It feels a bit nicer, it does keep the string centered. Personally i like it, but it does not make a big difference. It feels different, but not enough for me to buy another one soon for $15, although i am glad i tried one out. I do recommend trying one out, so if you have the extra money, go for it.
Thin lube- it is not nessry but i like to have a bottle at all times in case i can not clean a bearing for specific reasons, i just drop a drop into the bearing and re-break it in.
I would get Silicon if you get the X-convict, i love it with silicon, much better than o rings. Im not sure about the NB taking silicon, but maybe someone else on here knows.
