So the story is .... my 5 year old is getting a bit big for me to tow in the bike trailer and I was thinking of getting a tagalong/trailer bike. He can't ride his bike without stabilisers yet but I'm itching to go further afield with him (I soooo miss proper MTB riding!) and this seems like the only option until hes able to get around under his own steam. Has anyone got an opinion/advice on whether these are a good idea and if so which would you recommend? I've done a little research and see that they seem to be around £100 for a standard gearless model. Is this good value or do kids tend to outgrow these quite quickly? Is a geared model worth getting? Is the towalong sensation of a trailer bike the same as the trailer or can I expect a lot more instability? All advice/comments/guidance gratefully received. Thanks.