i have an asr maxed out but with no scsi, i prob wouldnt be too sad to get rid of it. havent used it in years.
ive messed around with the asr x's as well i thought they felt a little weird, my dude could bang some good shit out of it tho. there was a model that came out before the asr 10 that might be cheaper and it sampled as well, it was the eps 16. but asking for a simular piece thats cheaper with simular qualities,,,, i dont think its gonna happen. in fact i think the prices of asr's are going up now because they are becoming vintage. the asr 10's efx are still killer to this day. if you want cheaper (sampler wise) , roland has some sp model samplers you could find for dirt cheap, like the sp-202.
if you find yourself about to spend any kind of money, you mise well think about the future, a few dollars more for something that will be standard for the next some odd years would be worth it in the long run.
like someone else said earlier, your gonna have to learn any piece you get. if you have access to a computer that means you have access to free sounds, so i would suggest a mpc. the 2000 model's you can find for cheap now, i would get the xl if possible tho, cuz it can be modified...
later'
........ELDIA...