Except for the metric adaptors they seem the same as Aeroquip. All those fittings look the same as the ones I used (see photolink in my profile) for my extra oil coolers. Earls UK seems to stock everything, Earls US is hit-or-miss.
Those coolers look very nice. Almost like a "factory bike" from the old days.
If I remember correctly, HEL are German, and per the mags (what the fuck do I know!) are good quality.
The Earl's Indy shop has some pretty decent guys on the phone, but really, without the catalog and some knowledge of fittings etc., it can be a real pain.
Basically, you can buy the oil cooler you want in the USA to save some $$$ and then buy the fussy little bits to fit the Suzuki to the cooler from Earl's UK. Don't be shy about telling the UK that you are buying a cooler in the USA. Give them the number and talk special fittings over email etc. They are top fellows and know their shit.
For general hints on part numbers USA and UK, give me some specific shit via email at [email protected]