What's your coolest ISA card? PC/370 ???

I don't unfortunately have one... but the IBM ISA card available for the XT allowed that lowly machine to pretend it was a 370 class mainframe....in the early 80's (I worked for a company that got all the latest IBM wonders...) PC/370 it was called if I remember correctly.... made with IBM re-microprogrammed 68K silicon.. Later more powerful (5-7 mips) versions came out for MC ad PCI named PC/390 after the ES series mainframes. Tthe lowly XT, with it's MFM 10 meg drive would IPL the real machine and act as a channel processor, DASD (disk), and 3278 I/O. In other words, what Intel chips were meant to do, and no more! That same company also had a beautiful real 68k based IBM Instruments Scientifc (unix) computer... too bad IBM opted for the Intel platform instead, punishing us forever to a world of 64k segments, crappy architecture, small medium, large and linear model compilers, Messy-DOS, Winblows and all it's breathern... when we might have have 68Ks and unix...It would have been a different world. Thanks IBM! Anyone have either an IBM Instruments Scientific Computer or PC/370 card ? Both are rare, while PC/390 systems come up on ebay sometimes... Heinz