I LOVED the Hankook iPike W409's on our E30.
How new are your all-seasons? What type? Some fresh all-seasons are better than others.
I'd HIGHLY recommend buying a used set of snows mounted on steelies at the very least. Heck, I have some OLD snows with decent tread that worked well that you could have for $120, mounted on steelies.
1998 328i "M-tech"
2001 TDI Golf. 1300km/tank commuter. Boring, slow, cheap.
1991 P-car: 964c4 Let the porcupine jokes commence.
Gone: '99 M3 vert, '98 M3 sedan, '91 E30, '89 E30, '87 E30, '91 Euro M5, '93 6-speed Corvette, STI v8 swapped '98 Impreza, '73 2002, 2004 325iT