Not that i am an expert in any way, but apparently there is no difference in the gears of the SW and the SWPG (i thought there was, but i read a good report on the hulltruth forum where the guy said that he has taken both apart and there is no difference).
The difference appears to be in the gear ratios.
SW8000PG has a 4.9:1 gear ratio (PG is power gear) and drag is 25kg
SW8000 has a 5.8:1 ratio and the drag is 25kg.
SW10000pg gear ratio 4.9:1 drag 23 kg
SW10000 gear ratio 5.8:1drag 23kg
SW20000PG gear ratio 4.4:1 drag 25kg
SW20000 gear ratio 4.4:1 drag 25kg
The SW's have different gear materials compared to the FA's and some other upgrades.
I still like the FA's a lot, especially the 10 000FA; it is really a solid reel.
My mates SW20000 may just not have been lubricated properly from the factory, but i will continue to purchase the SW PG's even though i cannot read the Jap manuals and have no customer support.
There is a really good article on
http://www.360tuna.com on servicing a 8000FA; took mine totally apart and serviced it at work the day i was going fishing in between working on the computer and trying to make it not too obvious.
I have been through too many Stradics, baitrunners, spirexes etc. buy a Stella and you will have a machine that will perform flawlessly and outlast 10 other reels.
Have to get back to packing for tomorrow.