Brushless Motor Brands

Hello,

I'm sorry for what will to many of you be a basic post. For two years I've raced a brushless E-Maxx very competitively. I've done alright and I thought I knew everything one needs to know about brushless but today I feel like I was only really understanding a fraction of what I should know.

I know that during the heat of summer, my motor temps were a bit high and thus I figured that during my winter rebuild, I may replace my motor...a quick look at the RC Monster Brushless motor page is what has me questioning my grasp of this tech. I've always run Feigao motors, a 9L or 10L on 14 cells. Someone suggested maybe looking at a 7XL or 8XL as a cooler alternative. I found that RC Monster is moving to BK motors - that's cool. I've read they are similar to the Feigao's but with slightly better bearings. The I clicked on Lehner...

I've spared no expense with my E-Maxx. I purchased my brushless based on another guy running at my track. He gave me the part nums and I ordered it. I've not really thought much about it till now. What are these Lehner motors? I generally believe that you get what you pay for...the Lehner 1940/1930 motors are 2.5x the cost of the Feigao/BK motors - are they that much better? Why?

Then there are the XL Lehner motors...I assume the number is KVolts...so XL3100 is 3,100 RPM per volt.

Why are the XL's so much less $ than the 1940/1930?

Which is the ultimate Brushless Motor on 14 cells? Why? I guess one more mystery is once you know KV, what is the difference between say a 2400KV Feigao vs BK vs Lehner 1940 vs Lehner 1930 vs XL2400 (if one existed).

Aside from heat issues, I've been quite happy with my 10L & 9L motors. Now that I've seen there are other motors for much more $ I can't help but wonder why and what I'm missing.

Hopefully some of you Brushless-Whizzes out there can shed some light on this for me.

Thanks in advance.

DM