I realize you said you wanted to do Zzounds to take advantage of the payment plan, but I see 410XL's floating around
used in the under $200 price range, two local right now $150 range ... to me, tough to justify $400 new compared to that, and for what is actually an old technology cab ... with that said, the 410XL was a go-to years ago on lots of stages, and always held its own, but again, 90 lbs and 400 watt rating ...
I am very familiar with the XL line, played it for years, but not the HyDrive ... but keep in mind, you are also comparing a sealed cab vs a ported cab, 90 lbs vs 40 lbs, and $4-500
used will buy you a LOT of cabinet, probably two of each you are considering with some diligent hunting ...
With nothing in your profile, and no further information given on your situation, current gear, needs, etc., it is tough to fit one piece over another to your situation .. if your playing can be covered by a single 40lb 210 comfortably, I would have no interest in lugging a 90lb 410 that will lose 1/2 of its value the day you drive it off the lot just to save $100 ... check and see what used 210HD's are selling for, and you can then compare what kind of a hit you will take on that down the road as well, not to mention what you could get comparable for in the used market now ...
Again, I realize your desire to purchase new to allow payments, just pointing out another point of view ...
Your homework/legwork will likely give you the best answer for YOUR situation, not which cab works better for someone else in theirs ...