The L21a definitely looks good. I have the l2vn and it's good. But it can be great with a new led. Perhaps a w2? So why not try the w2 in the L21a instead.
Received my l21vn w2, and it's quite awesome. Not as amazing as the t27vn but it's also smaller. It's throw is similar to the delta vn but with more lumens and a rear clicky. I tested 1050 lumens and 435kcd.
The 26650 version with a dedomed sst40 received a R. But this one didn't. I wonder why. Maybe because it's just mediocre to other great throwers out there nowadays. I think it's great for the price and size for throw.
Great beam profile too.