Top 3 whom I have seen;

Test matches;

1. Adam Gilchrist

2. Kumar Sangakara

3. Andy Flower

ODI

1. Kumar Sangakara

2. Adam Gilchrist

3. MS Dhoni

Rahul Dravid can be a contender as a batsman-wicket keeper but he never kept in Test matches and I never considered him as a ODI player. Keeping or not.