I have seen a post or two that referenced a BM53 radio with round pins. However, I wouldn't try too hard to find one of those, because they would not have any of the primary advantages of a New Gen radio.

In my opinion, the main reasons to go with a BM53 radio are the following. You would get none of these advantages from an early round pin BM53.

• You have a nav harness with flat pin radio plugs
• You want Aux Input
• You want Sirius
• You want MP3 audiotext capability

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SOLD
2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input