This train is a very huge demanded train from Odisha.
I am giving tip for Sleeper classes.
After boarding from BBS , go to Upper berth (in case having Lower berth seat , exchange with someone just for some time) and go to sleep. Telling you do this or else your whole "happy morning" will turn into a "Bad morning".
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, specially between KUR to CHE , this train runs as a Intercity train. SL classes are packed with daily travellers and waiting holders. Beggars will give you a headache and transgenders will suck up your money. (They are very shameless)
But once train reached VSKP , It all becomes COMPLETELY empty. Seriously i was shocked to see the complete empty and cleaned SL coach after i woke up. All thanks to Ratnachal express which takes away all the intercity day travellers.
After this the whole journey from VSKP to SBC is a awesome one with full of heavy crossings and views of Mighty Godavari and Krishna rivers.
After VSKP , the next cleaning is done at BZA station and after that from BZA to SBC , it runs as it is , but still the coach condition of these ECoR is quite good.
I would suggest the VSKP folks who wish to travel to Bangalore, Take this train.
Because it is the only Non-VSKP starting train to bangalore who have General quota for VSKP to SBC also. So BBS & VSKP both share same quotas.
Best chances of getting confirm seats if you book well 1 week ahead of time in SL. AC coaches are very badly demanded for this train.
For VSKP to SBC , you can easily opt SL class (unless its not some Festive season like Pongal or Diwali). Best thing is Food.
The pantry is quite good and warm-good quality food is provided.

Tip for general quota seats.
If getting GNWL more than 7 or 8 in 2 nd a.c, then don't book. Very bleak chances of getting even into rac as people hardly cancel their seats.
In 3 rd a.c, till GNWL 30-35 is a safe mode, in extreme cases it will reach RAC or else confirmation is sure shot. But beyond that its a no-go reservation. Don't book.
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sleeper its all open up. Sometimes even GNWL around 100 have also ended up in RAC. So any two digit GNWL is atleast RAC confirmation.
This is for general quota i.e from BBS to SBC seats quota.