In order to better the first one, you would need the format ABCDE*EDCBA as the one I bested was 123*321 so you might tie mine but I believe you have to beat it to get it listed.
After finding 1234imbqWvqq1nNUgDxQ2wrg1R7GBZF321 in minutes, I didn't find another one ending on 321 all night. I have 141247 addresses starting with 1234 now. Two of these have a private key ending on 321:
Address:
12342YbDeQgi3dz4hcYiN5WRrth5MisEan
Privkey: 5HwRHBe1xQc4PgPGUUG8foi7ZAqLc2Qa6V1WbTkzjcYbrijj
321Address:
1234SGdyL9rDCjVdkTYySaTvJZNoyHEBBi
Privkey: 5J82rcTpLRfdh67SutpSj5AMXuMG8y3bc2bE2kR1bzS6YmMq
321I know it's totally useless having a vanity private key, as you can only use it to show off by posting it. I'll search my long list through these 142247 keys for matches, it might take a while.
Finding 1234xxxxxxxxx4321 can't be that hard, right?
Not sure of any other way to search for that form of other than to set the keep searching switch to er, keep searching to a dump file and then sift through what you've found.
I was indeed just writing output to a file.