Which of these 3 battery brands would you choose?

I would (DID) got with DEKA but not AGM.... For the small amount of extra work that flooded wet cells require AGM's are just not worth the added cost.

Trojan T-105's here. My first set lasted 8 years and my second set is now 3 years old and going strong.

11 years full timer.

I like Deka, have been using them for 4 years In this RV, last year replaced first set at 3 years age, full-time everyday use and recharge, over 1100 cycles of varying dod between 70% and 40% soc, with full recharge most days
I do not do 50 to 90,
I use what is needed 30% or 70% then recharge to full if possible
Then do it again the next day, that's full-time off grid living

Where are you buying them? Online or local?

Trojan are usually flooded unless you get the "Motive" brand.
T105
Deka (EastPennMfg. are great. They make the Energizer brand that Sams Club is known for. Sams also sells the Energizer agm

Interstate and Deka (not Decca) are (IMHO) the best quality in automotive wet batteries.

I would put Trojan at the top of the quality list and they are likely at the top of the price list as well. For a good quality vs. price I typically use Deka batteries. Interstate doesn't make batteries. I don't know who is currently making theirs, it changes every couple of years. Not long ago it was Johnson Controls. They may be a fine battery but I have no experience with them.

All the quotes say AGM

John,

My T-105s are not AGM.

Of the other two, I'm not sure. Decca is a manufacturer and interstate makes a few, but I don't think that they make any AGM

Good Luck,

Matt

I’m a Trojan fan but they are expensive.