diff --git a/benches/rlp.rs b/benches/rlp.rs
index 1160e311f..8bc7599e4 100644
--- a/benches/rlp.rs
+++ b/benches/rlp.rs
@@ -11,7 +11,7 @@ extern crate ethcore_util;
 
 use test::Bencher;
 use std::str::FromStr;
-use ethcore_util::rlp::{RlpStream, Rlp, Decodable};
+use ethcore_util::rlp::*;
 use ethcore_util::uint::U256;
 
 #[bench]
@@ -30,7 +30,7 @@ fn bench_decode_u64_value(b: &mut Bencher) {
 		// u64
 		let data = vec![0x88, 0x10, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef];
 		let rlp = Rlp::new(&data);
-		let _ = u64::decode(&rlp);
+		let _: u64 = rlp.as_val();
 	});
 }
 
@@ -54,7 +54,7 @@ fn bench_decode_u256_value(b: &mut Bencher) {
 		                0x30, 0x40, 0x50, 0x60, 0x77, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 		                0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0xf0];
 		let rlp = Rlp::new(&data);
-		let _ = U256::decode(&rlp);
+		let _ : U256 = rlp.as_val();
 	});
 }
 
@@ -76,11 +76,11 @@ fn bench_decode_nested_empty_lists(b: &mut Bencher) {
 		// [ [], [[]], [ [], [[]] ] ]
 		let data = vec![0xc7, 0xc0, 0xc1, 0xc0, 0xc3, 0xc0, 0xc1, 0xc0];
 		let rlp = Rlp::new(&data);
-		let _v0: Vec<u16> = Decodable::decode(&rlp.at(0));
-		let _v1: Vec<Vec<u16>> = Decodable::decode(&rlp.at(1));
+		let _v0: Vec<u16> = rlp.val_at(0);
+		let _v1: Vec<Vec<u16>> = rlp.val_at(1);
 		let nested_rlp = rlp.at(2);
-		let _v2a: Vec<u16> = Decodable::decode(&nested_rlp.at(0));
-		let _v2b: Vec<Vec<u16>> = Decodable::decode(&nested_rlp.at(1));
+		let _v2a: Vec<u16> = nested_rlp.val_at(0);
+		let _v2b: Vec<Vec<u16>> = nested_rlp.val_at(1);
 	});
 }
 
diff --git a/benches/trie.rs b/benches/trie.rs
index 2865c5778..a8cd407cf 100644
--- a/benches/trie.rs
+++ b/benches/trie.rs
@@ -10,6 +10,7 @@ use test::Bencher;
 use ethcore_util::hash::*;
 use ethcore_util::bytes::*;
 use ethcore_util::trie::*;
+use ethcore_util::triehash::*;
 use ethcore_util::sha3::*;
 
 
@@ -40,7 +41,7 @@ fn random_value(seed: &mut H256) -> Bytes {
 }
 
 #[bench]
-fn insertions_six_high(b: &mut Bencher) {
+fn trie_insertions_six_high(b: &mut Bencher) {
 	let mut d: Vec<(Bytes, Bytes)> = Vec::new();
 	let mut seed = H256::new();
 	for _ in 0..1000 {
@@ -58,7 +59,22 @@ fn insertions_six_high(b: &mut Bencher) {
 }
 
 #[bench]
-fn insertions_six_mid(b: &mut Bencher) {
+fn triehash_insertions_six_high(b: &mut Bencher) {
+	let mut d: Vec<(Bytes, Bytes)> = Vec::new();
+	let mut seed = H256::new();
+	for _ in 0..1000 {
+		let k = random_bytes(6, 0, &mut seed);
+		let v = random_value(&mut seed);
+		d.push((k, v))
+	}
+
+	b.iter(&||{
+		trie_root(d.clone());
+	})
+}
+
+#[bench]
+fn trie_insertions_six_mid(b: &mut Bencher) {
 	let alphabet = b"@QWERTYUIOPASDFGHJKLZXCVBNM[/]^_";
 	let mut d: Vec<(Bytes, Bytes)> = Vec::new();
 	let mut seed = H256::new();
@@ -77,7 +93,22 @@ fn insertions_six_mid(b: &mut Bencher) {
 }
 
 #[bench]
-fn insertions_random_mid(b: &mut Bencher) {
+fn triehash_insertions_six_mid(b: &mut Bencher) {
+	let alphabet = b"@QWERTYUIOPASDFGHJKLZXCVBNM[/]^_";
+	let mut d: Vec<(Bytes, Bytes)> = Vec::new();
+	let mut seed = H256::new();
+	for _ in 0..1000 {
+		let k = random_word(alphabet, 6, 0, &mut seed);
+		let v = random_value(&mut seed);
+		d.push((k, v))
+	}
+	b.iter(||{
+		trie_root(d.clone());
+	})
+}
+
+#[bench]
+fn trie_insertions_random_mid(b: &mut Bencher) {
 	let alphabet = b"@QWERTYUIOPASDFGHJKLZXCVBNM[/]^_";
 	let mut d: Vec<(Bytes, Bytes)> = Vec::new();
 	let mut seed = H256::new();
@@ -96,7 +127,23 @@ fn insertions_random_mid(b: &mut Bencher) {
 }
 
 #[bench]
-fn insertions_six_low(b: &mut Bencher) {
+fn triehash_insertions_random_mid(b: &mut Bencher) {
+	let alphabet = b"@QWERTYUIOPASDFGHJKLZXCVBNM[/]^_";
+	let mut d: Vec<(Bytes, Bytes)> = Vec::new();
+	let mut seed = H256::new();
+	for _ in 0..1000 {
+		let k = random_word(alphabet, 1, 5, &mut seed);
+		let v = random_value(&mut seed);
+		d.push((k, v))
+	}
+
+	b.iter(||{
+		trie_root(d.clone());
+	})
+}
+
+#[bench]
+fn trie_insertions_six_low(b: &mut Bencher) {
 	let alphabet = b"abcdef";
 	let mut d: Vec<(Bytes, Bytes)> = Vec::new();
 	let mut seed = H256::new();
@@ -114,6 +161,22 @@ fn insertions_six_low(b: &mut Bencher) {
 	})
 }
 
+#[bench]
+fn triehash_insertions_six_low(b: &mut Bencher) {
+	let alphabet = b"abcdef";
+	let mut d: Vec<(Bytes, Bytes)> = Vec::new();
+	let mut seed = H256::new();
+	for _ in 0..1000 {
+		let k = random_word(alphabet, 6, 0, &mut seed);
+		let v = random_value(&mut seed);
+		d.push((k, v))
+	}
+
+	b.iter(||{
+		trie_root(d.clone());
+	})
+}
+
 #[bench]
 fn sha3x1000(b: &mut Bencher) {
 	b.iter(||{