for me, Trojan Magnums are just about perfect. but, let's face it: our l'il bros come in all shapes and sizes. at least nowadays there's more discussion, indications on the box, etc. but even here in HK, it's not easy to find condoms that suit (for awhile, some company put out a "large-size" condom and put a HORSE'S HEAD as the box-logo, how absurd is that?
when i can't get Stateside, i use this site...it's worth a browse for info even tho the design is a bit silly:
http://secure.condomania.com/
u can search by size, type etc. they deliver to HK and charge int'l shipping charges. i haven't bought from them in years but i advise u keep yr purchases under US$50--i once bought US$70 worth and it arrived a month late, HK customs had opened it and resealed it with their branded-tape! in the past, the rule was that any package with a declared value over US$50 could be opened for inspection without cause, at least Stateside...i can't swear that the same rule applies here, but for some reason they opened it. everything was as it should be, it just caused some emails btwn me and the company...it all worked out.
as cheiu put it: "a little more room makes a huge difference." also, heat degrades latex so during HK summers, yes, keep 'em in the fridge. they'll last longer.
just my two cents worth.
JtB