The main reason u gave by urself that no one can compare the comfort, luxury and sedan-ness in this price (as liana is relatively cheap) in market!
Dont go on stories bro... I own a liana RXI 07 and innitially it was having RPM and Coil issues but since i'v replaced the coils (external) and putting IRIDIUM PLUGS rather the reguler lugs it not just solved my RPM and Coil prob its giving me excelent average and pick and i literally feel increse in torque and can feel pressing peddle of my car.
Overall liana is a best buy in this price with far better comfort thn the cars of thia level!
Rather going for cultus/alto/coure/baleno in this price u should go for liana but make aure u get the coils change if u feel to change coul and get iridium plugs in it ! Half of ur probs wil b solved IN SHA ALLAH