is one larger panel better than two?

I'm after a small panel for a rural shed.
I think I need about a 20Watt panel, I can get a 20Watt panel for $140 or a 10W for $70. (NZ$)
I'm thinking 2 x 10W would give better flexibility etc. Is there any down side to this approach?
Thanks
dave
I think I need about a 20Watt panel, I can get a 20Watt panel for $140 or a 10W for $70. (NZ$)
I'm thinking 2 x 10W would give better flexibility etc. Is there any down side to this approach?
Thanks
dave
Comments
No big reason to choose one or the other... Little bit more wiring / mounting hardware for two panels vs one.
If you need the flexibility between 12 volt (two in parallel) vs 24 volt (two in series)--Or being able to split the two panels to two different locations later, then two panels may be better for you.
-Bill
The only concern I might have with your specific situation is that it seems the really small panels can be cheaper quality and construction-wise. Slightly larger panels start getting better construction methods, comparable to "big" panels. Long as the 10W and 20W are comparably constructed I don't see an issue either way.
I went with "more smaller panels" when I installed my system. It had some benefits in my particular case:
UPS shipping was the determining factor in my panel size selection. The Kyocera 135 was the largest one I could find that ships UPS and that was from our host. Other vendors ship the same panel freight which makes the cost prohibitive for small orders.
Zeuspaul
i don't think they will require freight for 10-20w pvs.