I replaced my OEM tank with a TF underbed. This means I now have 45 gals instead of 26. Longer legs is nice. In four months of RV'ing full time, I have only had to pull into one station with fiver attached. Just have to remember to fill up before leaving a CG. My BIL has a TF 75 gal in his bed plus his OEM. Seems like a lot of gas, but he uses it to save $ by only filling at certain locations that he knows are a bit cheaper. Don't ask me where these are.
It's also nice to have the extra in case of unscheduled detours, if you catch my drift......
I went with TF because of the legal aspect and the fact they seem to be the industry standard, albeit a little expensive.
Who knows, choice is yours, this is just my opinion.....
Phil
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