I've just started feeding my 6 mth. old twins solids. I already have one basic high chair called Alanta highchair from Mothercare. I want to purchase one mre. so that I can feed both twins at the same time at the same height. I can't make up my mind whether to buy a Stokke Tripp Trapp highchair or a Chicco Polly highchair. Any suggestions or advice from those who already hve. these highchairs???