Drysuit boots: attached or separate

[Skruff]

Don't have an answer for you on the boots but what suit did you decide on (considering I should say)? I'm in the process of deciding if I get a back plate harness setup or dry suit in the next few months (slight funds/wife issue).

The big question is what material to go with on the dry suit. crushed neoprene or Trilam? I know I don't want a basic neoprene due to buoyancy but what are the pro's and con's to other materials.