i think the winmillion is a very good allround weapon why because you get 3 swing plus an energy disk per swing, with the energy disks having range aswell it can help out in a tight situantion i.e: when u want to keep away from somone or when you are low on health.
it is a fairly easy weapon to make and can get you access to tier 3 levels.
downside to this weapon is that it is the last in its line and only a level 4(could have made to be a level 5 easily).
but this is early days for spiral knights and they could bring out a recipie/weapon exspantion for it(or not) at a later date.
as i said before it is a very good well rounded and versitile weapon which i think should be considerd. i know that there are better weapons about like the wild hunting blade/ dread venom striker as they are much faster and more powerful, but how often are you going to get those easily or on a tight buget and can compinsate for the really slow weapons like the kovard or the divine avenger

I'm hoping that they not only include a 5* version, but multiple 5* versions of the Winmillion. Maybe the energy discs can be different types (shadow, elemental, piercing) or they can inflict different status effects (sleep and shock, perhaps?)

And here's to some 5* Troikas for that matter... then I can finally dust off my trusty Khorovod.

As stated by Gigafreak it'll frustrate the hell out of you, expect to make a second weapon specifically to handle dodging enemies, ESPECIALLY gremlins. You will ragequit on gremlin stages because of it. It's quite frustrating, and after using it to level 8 or so, I gave up on it. Way too painful trying to work around the faults. But the upside is the recipe sells really well.

No offense, but I don't really like the spur line. I will just stick with my calibur line. It is pretty much useless against all those monsters that N3cR0m4nS1r and Patchumz already mentioned. I would go with the calibur line instead, like me, cuz the charge attack is really good, with a chance to hit up to three times. The Leviathan Blade, one of the 5 star weapons in the calibur line(the other one is Cold Iron Vanquisher) has a major knockback in the charge attack. Of course, I don't really know that yet. The other forums say that though. I only have the tempered calibur now. In other words, I recommend the calibur line. You don't have too, and I won't take any offense, but I think that it is a very good weapon. Your choice.

You can't sell a crafted Winmillion, it would be bound upon crafting since its precursor must be leveled up.

If you've seen Winmillions for sale in the AH it was because they were crafted and not bound before the 5/17 patch. Or they dropped from a treasure box since items from boxes are not bound it seems.

Err actually, do you mean selling it to a vendor for 10k? It costs 4k CR + 400 CE just to craft it... that would be selling it at a loss. If they already made a Winmillion, then just hang onto it. Maybe it'll have a 5* version someday that fixes some of the 4*'s issues.