The Electric Transport Shop – a supplier recommended on this site, and whose own website is very useful – recommend this budget bike for heavier riders – up to 130 Kg.
The Electric bike magazine gives its sister, the LX, a good review:
Smarta Electric Bike Magazine Review
Discussion on Pedelecs points out Smarta use brushed motors, but the bike overall is rated well. Also from Pedelecs, a happy owner review.
UK Electric Bikes 