you really need to try google a bit

but to answer your questions..
2nd hand, depends how long the 1st owner has used it and whether you like to experience the burn in process yourself. the issue about sticking something into your ear which someone else has stuck into theirs is not really a big thing considering you can buy new earpieces.

er4s > er4p > er6i > er6 in order of price, er4s being the most expensive of the ety range.

comparing shure and ety, try head-fi.org, got a few reviews there.

but if you got da spare cash, yeah try the one in the picture alamaklor posted.. its about us$900

threads merged. have PMed threadstarter for change of topic name. lets use this thread from now on for recommending and suggesting earphones. as usual, please refrain from one word/model/brand answers. as much as possible try and justify your suggestion with some useful information.

US$190 is a good price! where is your friend getting them from? do share hope your RH-10 has enough juice to drive these earphones, as they are rated at 100ohms. get the most out of your setup by using the lineout on your md player and hooking it up to a portable amp perhaps.

forget the 4b. either go with the 4p or the 4s. if you are 100% certain u wont be getting an amp, the 4p would probably be a safer bet. regarding using them as portables, i see quite a number of people on head-fi using the 4s for home use and the 6i for their daily commute.

The P to S cable is for those people who buy the ER4P, once you use that extra cable, it changes the sound characteristics of the ER4P to match the ER4S exactly.

considering your situation of using earphones with a portable setup but without an amplifier, i'd go with either the er6 or the shure. i chose ER6 over ER6i cause the 6i is white and i have bad experience with my white EX71SL and the white cord getting all grey and dirty. also, the ER6 has a more accurate frequency response than the 6i (i like to listen to music the way it was recorded and not having any coloured sound from the earphones).. of course, if u are a whitey person, then by all means go with the 6i if u got the extra money to spare, just go for the ER4P + the P to S converter. that way, u get the ER4P and if u feel like trying the ER4S sound, just hook up the converter and there u go.

just to let you guys know, the ebay seller "idealsound" is affiliated with www.discountheadphones.com and they are selling the ER4s earphones for US$180 which is really well below the retail of US$330. i used their "offer best price" option in their auction and gave an offer of US$170 which they declined but messaged me saying they would sell for US$180. of course, + US$40 shipping international

you can try bluetin.com

for that amount of money either top up a bit say extra RM20-30 and get the philips HP890/895 or if you wanna try something smaller maybe the PX100.

if you want to keep your money in your wallet i suggest you just keep listening with your SR60 and dont ever try on anything higher in the grado range i tried each series and ended up emptying my wallet over the 325i which sounded the best overall. luckily they didnt have the RS1 in the shop at the time..

heh yeah i own both now, but find myself listening more with the 325i cause the music sounds much more interesting than with the senns. bass is soooo slammin' !! i agree with alamaklor that the grado/alessandro sound is a bit bright at times. my 650 sitting pretty in its box now poor thing getting slightly neglected.

recable? man, the cardas upgrade cable for the senn costs S$250 here.. i think i'll be saving that up for a pair of ER4/SuperFi5pro soon to replace my ER6 for portable use.

he means its hard to get the SR60 in malaysia, well, relatively hard, compared to the HP895. dont mistake 'superb clear' for 'bright' though. grado cans are known to be on the bright side, and i can testify to that. different genre of music do sound better on the grado line. just make sure if you are aiming for the SR60, dont try the higher range grado headphones because you will be too tempted to spend more money on them instead..

lol i bought a pair of alessandro MS2i today and got a brand new pair of westone UM1 for free

bought it for US$305 which is almost the same price as the alessandro website yeah its a good deal but the UM1 is a really sub par IEM.. heck its free anyways

the UM1 is pretty much the crappiest pair of equipment i have owned so far.. i cant help but NOT recommend it..

actually, dont bother with the UM2 as well.. really not worth the money. muddy, bloated, detail missing.. sounds like an overpriced EX71