So many variables in this question, experience, size of turbine as already said, type of field you are going to fly from etc, etc, if you want something simple and will fly off anything have a look at the Mick Reeves Super Reaper, its a delta and its a kit, can be fitted with a fixed UC so can be set up so simply, if going for the Boomer range I would go for the Sprint over the Elan or XL it fly's much nicer is fully aerobatic and can land as slow as you like, just don't get the US scheme if you are over 45 years old and your eye's are a bit off, grey against a grey sky is not good for slightly off eyesight.
Mike