Finally, I thought I was the only one crazy about something like that.
I personally prefer the sharp or short transitions which switch from one to another song very fast, if they are done good.
Long transitions, in my opinion, don't fit to eurobeat because they stretch out the songs.
You can implement these better in slower music styles (125-140bpm).
Maybe the best sharp transition I heard so far is this one:
https://youtu.be/XdTJ7dm4EFc?t=2m53s
I just love the way it builds up and then literally explodes into the next track.
Crazy For Love -> 777 on SEB 240 CD1 is a good one, thats the first one I found right now (on SEB) (I bet I will find better one's when I search longer).
https://youtu.be/5tm2KYi2ta0?t=1h2m15s
There's also Tsundere Night -> Rockin' Hardcore -> Time for a Mircale on SEB 210 CD 2
and not to forget Different Girl -> Get Somebody To Love Him SEB 240 CD 2
I could talk literally for hours about this topic because I love non-stop mixes
