Of the ROM BASICs, I'd say Amstrad BASIC is even better than BBC BASIC. The BASIC on the Commodore 128 is pretty good but a bit sluggish. TRS-80 Level I was li

Of the ROM BASICs, I'd say Amstrad BASIC is even better than BBC BASIC. The BASIC on the Commodore 128 is pretty good but a bit sluggish. TRS-80 Level I was limited because it was essentially Tiny BASIC with floating point added. Level II BASIC was Microsoft BASIC. The Apple II initially came with Woz's Integer BASIC in ROM. It was better than TRS-80 Level I BASIC, unless you needed floating point. The Apple II Plus had Microsoft 6502 BASIC in ROM. It was essentially the same BASIC that Commodore used in the VIC-20 and 64, except Apple added a few graphics commands to theirs and Commodore added the screen editor. The Apple II and Commodore 64 ran at about the same clock speed, so when you benchmark their Microsoft 6502 BASICs, they're pretty much identical in speed.