HI
Dont let the fact that bristol does the sylabus in 2 modules put you off. Module 1 contains 2 moderate subjects ie. Mass&Balance and Human Performance and 2 very easy subjects i.e VFR AND IFR COMMS. So even though you are doing 8 subjects in one module, there are only 4 really tough ones.(nav, met , flight planning and instuments).
however it is down to personal preference. i'm with bristol and i can't recommend them enough. passed all 8 in mod 1 last week.
good luck