Thank you I appreciate the advice.
I do like the Agilents and if they do run specials on software bundles it would make it more reasonable. I do notice that all Rigol MSO's seem to have 16 channels, how often does someone use more than 8 channels or is it mostly I2C and SPI that you could use your analog channels for like others had mentioned. I am not familiar with logic channels but, would like to have them for future use and learning.
As far as the Rigols, buying a less expensive version and hacking it I probably could not just take them, I would probably have to pay them for those options. After paying for those upgrades and options an MSO1104Z would cost around $1400 or more.
Also when using 4 channels, you only get 250Ms/s, if testing anything close to 100Mhz you really run the possibility of aliasing.
Does that sound right.
I am really interested to know though how often anyone does use more than 8 logic channels at once.