I just wonder: both, the DS1102D and DS1104B are currently on sale for <800€ in some retail shops in Europe (not eBay or obscure Chinese dealers). This means a price drop to nearly 50% of what they were sold for not so long ago. Indeed in some shops the lesser models cost much more now than the better models (e.g. in one shop the Ds1064b costs about 1500€ and the Ds1104b about 800€ which is kinda weird).
So is this there currently some kind of special deal for these two scopes or is there something fishy going on? Or are the next models in sight and the old ones are sold out?
Honestly, I kinda toyed with the idea to get a somewhat reasonable 4ch or mixed mode scope for years now, but they were always much too expensive compared with the 2ch models. And it's not really that I urgently need it now. So I could as well wait a little longer and wait for scopes to get better and cheaper.
Then again <800€ for a reasonable 4ch 100MHz Rigol seems like a very good deal and I wonder if prices will rise again soon.
Besides: any opinions on DS1102D vs. DS1104B? 2ch seemed always too limited for me. e.g. for SPI you need at least 4 channels, but the LA features of the DS1102D are obviously not the best and in the job, I usually prefer to use analog channels over digital ones to see slopes and noise. And I rarely ever needed more than 4 channels.