I've personally been looking at some scopes too, and the Agilent 3000 series seems a very nice device, but it has the price tag.
Alternatives I looked at were some Hameg's and Rigol's.
The Rigol seems not too bad; the rigol DS4024 is about 2400 euro's , 4 channel 200MHz. It claims 110k wfms/sec, 140MPts memory (wow!). It said it has triggering from serial (SPI, RS232, I2C, CAN?) stock, but I don't know if this is done in hardware. I also don't know whether you can capture 140MPts at the claimed 4GS/s.
The problem is, if you want to get extra's like a function generator, more math tools, it probably doesn't have it. For me , it certainly seems interesting.
Hameg's HMO2022 is apparently a bit cheaper, (2180 euro's on the site), but it includes more features you have to buy separately. The user panel seems cramped, (probably more compact scope though), only having 1 vertical knob.. It's A-D is not 4GS/s (?), 'only' 2MPts of memory (same as Agilent)
Basically, it's a very competitive market I'd say, and I am not ready yet to spend 2k+ euro on a scope. But I am pretty sure the high update rate and triggering stuff of the Agilent is good.