i use & have done for a long time, one of these
http://www.galatent.co.uk/more_detai...ItemCode=07302
sides are available fairly cheaply & the roof is totally waterproof
every spare is available should it blow in during high wind etc
and they are sensibly priced so repairing rather than replacing is feasible
if you'd asked for the link a month ago they were only £180 in this size!
everything gets more expensive when the sun comes out
just look how much all camping gear has gone up in the last few weeks!