The Bogoljubow's (who you probably know very well because he can be the one that mentioned this to you) 1926's move (Shulz played it few months earlier btw) 5...Nbd7 constructs a good plan for fighting Colle-Koltanowski system (dxc5 to be met by Nxc5 and so on..). It's not the panacea though. I like the main line with 5...Nc6. What I suggest to you is:
The main line was 10...Bd6 (to prevent e4-e5).. And now some variations:
S.Peric - (our man) T.Kosten (Tarragona, Spain 2007) 0-1 (of course
) continued 11. h3 Nh5 12. Nb3 Ng3 13. Qc2 dxe4 14. Bxe4 Nxe4 15. Qxe4 Bd6 16. Rd1 and here Tony played 16...e5 (and I prefer 16...Rd8!? just to tease him, maybe)..
Another line may be: 11. e5 Ng4 12. Nb3 Bb6 13. Bf4 f6 and so on..
If 11. b4 Bd6 12. Bb2 Ng4 13. h3 (13. g3 Nce5) Nge5 14. Bc2 (maybe the best here) and now 14...Ng6!? (I think this move is not played before..)
11. a3... is best met by 11...a6 and then Ba7 and Nh5 on h2-h3 as in K.Gawehns 2410 - T.Henrich 2445 (Germany, 1998)
And that's it!..
This 5...Nc6 can be played even on 5. 0-0 or 5. Nbd2 (instead of 5.c3) thus transposing to the main line.. It stands good with the Zukertort's 5.b3..., too..
Of course, white can deviate from the main line with say 7. dxc5... (and early b2-b4 plan). Then you can follow I.Stepanov - G.Airapetian (Tula, Russia 2003) which continues 7...Bxc5 8. b4 Bd6 9. b5 Ne5 10. Nxe5 Bxe5 11. Bb2 O-O and you'll survive..