Sorry if I missed an earlier posting, but have you considered this?
http://www.precisiontemp.com/pt_rvmd_rv500.html
Tuna
Reno, NV
> Hi. I have decided to change out the water heater too. $383.94 for SW6DE
> and $448.34 for SW10DE out the door 8.25% sales tax incl. for these two
> Suburban Dual Fuel Gas Electric Electronic Ignition with Flush Mount
> Doors, 6 and 10 gallon states a faster recovery when both fuels
> simultaneously turned - on gains 6gpm recovery with both having 12,000 BTU
> burner.
>
> So question: Is the $64.40 dollars difference worth it for the extra 4
> gallons. Sale ends tomorrow. Gotta buy one or the other. Both about same
> depth. Opening size and space does not matter for this application. I
> pulled a Attwood Bowen 10 gal which is same as the Suburban 10 gal size.
> Sale is real and I can't get near the price, checked at least 13 others,
> not ebay.
>
> I would really value opinions. Tom P opposed to 10 gal. Says just more
> water to have to heat up. Please offer your opinions. I always thought
> bigger maybe is better, that's why have a 40 or 50 (whatever I put) in my
> home. Please?
> -Eddie-
> Houston, TX