My current personal best in Irem's R-Type.
I wanted to score as much as I could in this run, and some of the quirkier tactics I use are geared toward this end--e.g., I take all the speed items, sacrifice my spare lives in order to replay the most lucrative scoring stretch of the game (the latter half of 1-7), and let certain bosses hang around so I can kill more of their destructible parts or accompanying goons.
1-1: 00:05 | 1-2: 02:35 | 1-3: 06:03 | 1-4: 09:11
1-5: 11:08 | 1-6: 13:23 | 1-7: 15:45 | 1-7 milking: 18:30 | 1-8: 32:08
2-1: 35:32 | 2-2: 37:56 | 2-3: 41:25 | 2-4: 44:16
2-5: 46:11 | 2-6: 48:11 | 2-7: 50:34 | 2-8: 53:27