Playing 8/5 JOB instead of 9/6 JOB...you're giving up about 2 bets (or 10 credits) every ~90 hands, ie: 1 bet (5 credits) every ~45 hands [it's actually more frequent than that]. I don't know how much recreational gamblers play, let's say 2 hours per visit, playing a leisurely 600 HPH, on $1 denom. On a trip, that's 1200 hands of play, losing $5 every 45 hands....that's
$130 per trip in extra losses. Playing once a week, that's $520/month.
This is not some "theoretical mathematical mumbo jumbo" where you gotta play a million hands before you begin to realize how much it hurts the player. It's something you will easily and quickly realize it's hurting you, quite a lot. Next time you go out and play, whatever game you're playing (preferably full-pay or close to it), and every time you hit a hand that isn't on the full pay pay-table, keep count. (ie: Playing 9/5 JOB, every time you hit a flush, keep count....if you're playing 7/5 BP and hit a FH, keep count...playing 8/5 DDB and hit a FH or flush, keep count...etc.) Just add '1' every time you hit an under-paying hand...unless you're getting underpaid by 2 (ie: 6/5 BP) then add 2 to it.
At the end of the session, multiply your number by the size of your bet ($1 denom playing 5 credits...you'd multiply by $5). I tried this before, on a $5 8/5 JOB machine [a pretty good promotion]....the loss in 8/5 vs 9/6 was a little over $1,000.
Rob, you can hit a big hand today, tomorrow, or next year. Always going to be ups and downs, no doubt about it. But if you play for any good amount of time, and it quickly (and constantly) eats you down. If you pay attention, you'll see. But I gotta give it to you, you sound very much like a gambler, more concerned with a game's volatility than the return/HE.