i've been doing some reading and research and i would personally recommend Joie Stages. which works from birth till 7 years of age. multi position and its isofix ready and as well with seat belt ready too.

More importantly it is safe with isofix and seat belt ready and works till 7 years of age or 18kgs

I was comparing Joie Tilt (0-18kg) and Joie Stages (0-25kg), bought Stages at www.littlewhiz.com in the end because

1. bigger seat ...good for chubby infants
2. paddings/cushions is more comfy
3. was on offer < RM1000 for superb quality & looks found on higher specs