@fortunate_engr hello. If i were u, i'd go for 190, cause it's the safest. May mga reported incidents last july 12 invitation round (here and in expatforum) where some people who already got invited (and lodged), got another invite last july 12. Yeah 189 is the better choice if you're selecting from the 2 invites, pero isipin mo na lang, u already got 3shots, kaya don't waste what some people take a year++ to get.
In terms of $$$, same lang naman ang processing fee ng dalawa except that u have to shellout another 10k pesos (approx) for state sponsorship application. In terms of grant processing, 190 also belongs to a higher priority group. Group 3 sya if im not mistaken, while 189 belongs to group 4.
Good luck!