Going from an IBM PC-compatible system with a 4 MHz CPU and a Hercules Monochrome graphics chipset (16 shades of amber FTW!) over to a friend's house where he had a dual-speed external CD-ROM playing Wing Commander 3 with FMV was a quantum leap in computing power (I think it was a 486?).
Going from that IBM PC-comptabile system to a Compaq Presario all-in-one with a 486sx2 66 Mhz CPU, VGA graphics, onboard SB16-compatible sound, and a 19.2K modem was the next quantum leap. Using the computer to browse BBSes and talk with people over FIDOnet around the world blew my teenage mind.
Going from a SoundBlaster 16-compatible sound chipset to a Gravis Ultrasound ACE (and all the extra cables that required) in my own 486dx4 133 MHz system was another quantum leap in computing power. Playing MOD trackers and MIDI files off the Internet just blew my mind. A sub-512 KB file that sounded like a full symphony of real instruments? Mind ... blown!
Going from a 19.2 K modem to a K56Flex modem (the non-standard 56.6 Kbps setup) and connecting to a K56Flex modem pool at the local college and hearing those extra beeps at the end, and actually connecting at 53.3 Kbps was mind-boggling. Under 10 minutes to download 1 MB (or something like that)! Web browsing was now a thing!
But storage hasn't really blown me away. Sure, going from dual 5.25" floppies (under a MB of storage) to single 3.5" floppies (over a MB of storage) to CD-R/RW to DVD-R/RW to USB flash stick was interesting, but not mind-boggling. Going from a 40 MB HD to a 20 GB HD to multi-TB HDs is awesome, but not "mind ... blown" territory. Progress has been steady over the past 20 years without any real giant leaps.
About the only thing in storage that has really amazed me is ZFS and how easy it makes managing storage systems in the 10-100 TB range with disks spread across multiple JBOD chassis. But even that was done in a steady progression over the past 7 years or so, without any real giant leaps.
Maybe if MRAM, RRAM, memristors, and all that other non-volatile RAM stuff actually appears, then storage will be existing again. Otherwise, it'll just continue to plod along, slow and steady, with capacities increasing each year, and prices slowly coming down, and speeds increasing slowly. Storage is actually one of the least exciting areas of technology right now.