Thanks,
I understand the 'look' very well, most people that play rock I guess would use a Precision (from what I've seen on TV).
From my perspective and from the limited stuff we play in church a 4 string is almost adequate. The problem I sometimes find is the lack of notes, for example a song in G would usually be played 3rd fret on the E string which on a 3 chord trick would give similar sounding notes on C & F.
If the same song begins on the G note using the D on the 5th fret, the C above is thin & tinny. I sometimes find it hard to get notes of a matching depth without 7" fingers to reach them. I realise that technique is all but my digits aren't very long. I'm thinking that a 5 string would help here.
Please remember I'm quite new to bass playing and there are no teachers worth going to around here.