Battery load testers - Any recommendations ?

[Milacron]

The pulse testers are far better as they measure the batteries ability to give and take energy.

I want to believe that as I'd love an excuse to buy a new electronic doo dad. But as of yesterday getting word from a couple of guys that test start batteries (marine and semi truck) every day for a living that the electronic type are wrong about 1/3 of the time, whereas the old "toaster" style* are never wrong. I have asked for elaboration on the "1/3 wrong" bit have yet to hear back.

Neither of these guys deal with pure deep cycle batteries however, only commercial grade CCA types... any thoughts on how well the SnapOn unit would work for deep cycle ? (which typically don't have a CCA rating but rather, amp hours)

Yesterday I met up with our local SnapOn truck to see one of these in the flesh. He only had the 150 and the 750 models on the truck....none of the 350 in stock. Nonetheless, was interesting to see them in real life. The 350 is on back order at SnapOn... none available to ship until first week in October.

The 750 would be cool, with built in printer and 2000 CCA capacity...but at over $850 + tax difficult to justify for my situation. Just so much "man-ing up" I can stand

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*The Hazzard Fraught 500 amp carbon pile load tester is on sale for only 50 bucks !
http://www.harborfreight.com/catalogsearch/result?q=battery+tester


Still, for that one could get the 80 piece rotary nose picking tool...
http://hooniverse.com/2012/09/24/truth-in-advertising-hazard-fraught-tools/