My stereo crapped out on my 90 525i this week. I put in a tape and it wouldn't work or come back out. I got the tape out but it's stuck on tape mode and won't return to radio. So I have nothing. I checked around town and the local dealership, no real solutions locally. I priced out some good aftermarket units but I was happy with the sound I was getting from the BMW unit. I checked Ebay and found some E30 units that might work. My question is it worth it to send my unit to a repair shop, or should I try to buy a used unit from the internet or get a new aftermarket sound system locally. If I do get an aftermarket unit what do I need to look for?

Johnny B