We have both Icom (M71's) and Standard Horizon (HX 280E) handhelds , nothing between them performance /quality wise IMO, but the Icoms frustrate me a little as they discharge their batteries even when not switched on.....unless you open the battery case when not in use..... The standards by comparison do not..... which is why we bought them.
On that basis alone, and if this discharging is still a 'feature; of newer Icoms, I would lean towards the Standard kit
Oh, and we use lanyards to connect the handset to lifejacket, so couldn't see the point in having a floating set....but that's also because i'm a thrifty git