I enjoy rides along the canal ( little bits on road) and need good suspension to help my back. Canal paths can be bumpy. Any ideas on good quality bike but not manic prices that would suit my needs. Thank you
What's your budget? If you're looking sub £500 suspension forks will generally be low quality and not be too effective. Tyre pressure will have more effective in giving a softer ride. Bigger tyres will also help. You could also consider a suspension seat post and will give more comfort your back as it will cushion your spine directly.
How about this US style cruiser? Should be comfy;
In that case, I would suggest a junior bike, the Wiggins Chartres - a 26" wheel hybrid. I have one of these, and it's a comfy bike to ride, even on the crappy, cracked, gravel-covered and pot-holed rural roads I have to put up with around here. So it should more than cope with canal tow paths.
What @Cycleops says is right - at the price point you're looking at, wider tyres run at a lower pressure will be equally if not more effective as cheap forks (and last longer). IIRC the supplied tyres are 1.5 inch Kendas, which should be more than adequate.
At the moment, the Chartres is on an offer at just a tenner over your budget.