ive just been to the Le Man gp on the bike, 1225 miles with an intercom from flea-bay (curtesy of hong kong). When it came through he post it didnt work and had to solder some components to make it work, doh, after that it was....... ok, it worked for most of the journey at least. We couldnt use it on the motorway because of the wind noise but as soon as you slowed down in town then it was ok. It was one of those ones that resembles a head phone plug thingy, it hurts the old ear after about 60-70 miles. On the return journey it broke when we got back to Dover, the head peice just fell to bits lol, it did about 950-1000 miles before dying.
On the whole it was well worth the money so we could talk over all those miles but for next time we will invest in a fancy pants intercom with all the bells and whistles
But for 99p..... whos complaining with that
*Edit* Ive just googled those two intercom's you posted and the one i had was the tronic h-3050